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class.vartype-test.php
2353 lines (2145 loc) · 96.7 KB
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class.vartype-test.php
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<?php
/**
* Variable testing tests.
*
* @package PHPCheatsheets
*/
// Prevent direct calls to this file.
if ( ! defined( 'APP_DIR' ) ) {
header( 'Status: 403 Forbidden' );
header( 'HTTP/1.1 403 Forbidden' );
exit();
}
require_once APP_DIR . '/class.vartype.php';
/**
* Variable testing tests.
*/
class VartypeTest extends Vartype {
/**
* The tests to run.
*
* @var array $tests Multi-dimensional array.
* Possible lower level array keys:
* - title Used as tab title
* - tooltip Additional code sample for tooltip on tab
* - url Relevant PHP Manual page
* - arg Function arguments
* - function Function to run
* - Notes Array of notes on this test
*/
var $tests = array(
'gettype' => array(
'title' => 'gettype()',
'url' => 'https://php.net/gettype',
'arg' => '$x',
'function' => 'pr_str( gettype( $x ) );',
),
'isset' => array(
'title' => 'isset()',
'url' => 'https://php.net/isset',
'arg' => '$x',
'function' => 'pr_bool( isset( $x ) );',
),
// Will be removed from $tests property from constructor if not on PHP 7+ to prevent parse errors.
'null_coalesce' => array(
'title' => '$x ?? \'not-set\'',
'url' => 'https://php.net/language.operators.comparison',
'arg' => '$x',
'function' => 'pr_var( $x ?? \'not-set\' );',
'notes' => array(
'<p>The Null Coalesce operator is only available in PHP 7.0.0+.</p>',
),
),
'var' => array(
'title' => '$x',
'arg' => '$x',
'function' => 'pr_bool( $x );',
),
'not_var' => array(
'title' => '!$x',
'arg' => '$x',
'function' => 'pr_bool( ! $x );',
),
'if_var' => array(
'title' => 'if( $x ) {..}',
'arg' => '$x',
'function' => 'if ( $x ) { pr_bool( true ); } else { pr_bool( false ); }',
),
'if_not_var' => array(
'title' => 'if( ! $x ) {..}',
'arg' => '$x',
'function' => 'if ( ! $x ) { pr_bool( true ); } else { pr_bool( false ); }',
),
/*
* Test is_...() functions
*/
'is_array' => array(
'title' => 'is_array()',
'url' => 'https://php.net/is_array',
'arg' => '$x',
'function' => 'pr_bool( is_array( $x ) );',
),
'is_binary' => array(
'title' => 'is_binary()',
'url' => 'https://php.net/is_binary',
'arg' => '$x',
'function' => 'if ( function_exists( \'is_binary\' ) ) { pr_bool( is_binary( $x ) ); } else { print "E: not available (PHP 6.0.0+)\n"; }',
),
'is_bool' => array(
'title' => 'is_bool()',
'url' => 'https://php.net/is_bool',
'arg' => '$x',
'function' => 'pr_bool( is_bool( $x ) );',
),
'is_callable' => array(
'title' => 'is_callable()',
'url' => 'https://php.net/is_callable',
'arg' => '$x',
'function' => 'if ( function_exists( \'is_callable\' ) ) { pr_bool( is_callable( $x ) ); } else { print "E: not available (PHP 4.0.6+)\n"; }',
),
'is_float' => array(
'title' => 'is_float()',
'url' => 'https://php.net/is_float',
'arg' => '$x',
'function' => 'pr_bool( is_float( $x ) );',
),
'is_int' => array(
'title' => 'is_int()',
'url' => 'https://php.net/is_int',
'arg' => '$x',
'function' => 'pr_bool( is_int( $x ) );',
),
'is_null' => array(
'title' => 'is_null()',
'url' => 'https://php.net/is_null',
'arg' => '$x',
'function' => 'if ( function_exists( \'is_null\' ) ) { pr_bool( is_null( $x ) ); } else { print "E: not available (PHP 4.0.4+)\n"; }',
),
'is_numeric' => array(
'title' => 'is_numeric()',
'url' => 'https://php.net/is_numeric',
'arg' => '$x',
'function' => 'pr_bool( is_numeric( $x ) );',
),
'is_object' => array(
'title' => 'is_object()',
'url' => 'https://php.net/is_object',
'arg' => '$x',
'function' => 'pr_bool( is_object( $x ) );',
),
'is_resource' => array(
'title' => 'is_resource()',
'url' => 'https://php.net/is_resource',
'arg' => '$x',
'function' => 'pr_bool( is_resource( $x ) );',
),
'is_scalar' => array(
'title' => 'is_scalar()',
'url' => 'https://php.net/is_scalar',
'arg' => '$x',
'function' => 'if ( function_exists( \'is_scalar\' ) ) { pr_bool( is_scalar( $x ) ); } else { print "E: not available (PHP 4.0.5+)\n"; }',
),
'is_string' => array(
'title' => 'is_string()',
'url' => 'https://php.net/is_string',
'arg' => '$x',
'function' => 'pr_bool( is_string( $x ) );',
),
// Float specific.
'is_nan' => array(
'title' => 'is_nan()',
'url' => 'https://php.net/is_nan',
'arg' => '$x',
'function' => 'if ( function_exists( \'is_nan\' ) ) { $r = is_nan( $x ); if ( is_bool( $r ) ) { pr_bool( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print "E: not available (PHP 4.2.0+)\n"; }',
),
'is_finite' => array(
'title' => 'is_finite()',
'url' => 'https://php.net/is_finite',
'arg' => '$x',
'function' => 'if ( function_exists( \'is_finite\' ) ) { $r = is_finite( $x ); if ( is_bool( $r ) ) { pr_bool( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print "E: not available (PHP 4.2.0+)\n"; }',
),
'is_infinite' => array(
'title' => 'is_infinite()',
'url' => 'https://php.net/is_infinite',
'arg' => '$x',
'function' => 'if ( function_exists( \'is_infinite\' ) ) { $r = is_infinite( $x ); if ( is_bool( $r ) ) { pr_bool( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print "E: not available (PHP 4.2.0+)\n"; }',
),
// Array related.
'is_iterable' => array(
'title' => 'is_iterable()',
'url' => 'https://php.net/is_iterable',
'arg' => '$x',
'function' => 'if ( function_exists( \'is_iterable\' ) ) { pr_bool( is_iterable( $x ) ); } else { print "E: not available (PHP 7.1.0+)\n"; }',
),
'is_countable' => array(
'title' => 'is_countable()',
'url' => 'https://php.net/is_countable',
'arg' => '$x',
'function' => 'if ( function_exists( \'is_countable\' ) ) { pr_bool( is_countable( $x ) ); } else { print "E: not available (PHP 7.3.0+)\n"; }',
),
/*
* Type casting.
*/
'array' => array(
'title' => '(array)',
'url' => 'https://php.net/language.types.array#language.types.array.casting',
'arg' => '$x',
'function' => 'pr_var( (array) $x, \'\', true, true );',
),
'bool' => array(
'title' => '(bool)',
'url' => 'https://php.net/language.types.boolean#language.types.boolean.casting',
'arg' => '$x',
'function' => 'pr_bool( (bool) $x );',
),
'float' => array(
'title' => '(float)',
'url' => 'https://php.net/language.types.float#language.types.float.casting',
'arg' => '$x',
'function' => 'pr_flt( (float) $x );',
),
'int' => array(
'title' => '(int)',
'url' => 'https://php.net/language.types.integer#language.types.integer.casting',
'arg' => '$x',
'function' => '$r = (int) $x; if ( is_int( $r ) ) { pr_int( $r ); } else { pr_var( $r, \'\', true, true ); }',
),
'object' => array(
'title' => '(object)',
'url' => 'https://php.net/language.types.object#language.types.object.casting',
'arg' => '$x',
'function' => 'pr_var( (object) $x, \'\', true, true );',
),
'string' => array(
'title' => '(string)',
'url' => 'https://php.net/language.types.string#language.types.string.casting',
'arg' => '$x',
'function' => 'pr_str( (string) $x );',
),
'unset' => array(
'title' => '(unset)',
'url' => 'https://php.net/language.types.null#language.types.null.casting',
'arg' => '$x',
'function' => 'if ( PHP_VERSION_ID >= 50000 ) { pr_var( (unset) $x, \'\', true, true ); } else { print "E: not available (PHP 5+)\n"; }',
),
'f_unset' => array(
'title' => 'unset()',
'url' => 'https://php.net/unset',
'arg' => '$x',
'function' => 'unset( $x ); pr_var( $x, \'\', true, true );',
),
/*
* ...val()
*/
'floatval' => array(
'title' => 'floatval()',
'url' => 'https://php.net/floatval',
'arg' => '$x',
'function' => '$r = floatval( $x ); if ( is_float( $r ) ) { pr_flt( $r ); } else if ( is_int( $r ) ) { pr_int( $r ); } else { pr_var( $r, \'\', true, true ); }',
),
'intval' => array(
'title' => 'intval()',
'url' => 'https://php.net/intval',
'arg' => '$x',
'function' => '$r = intval( $x ); if ( is_int( $r ) ) { pr_int( $r ); } else { pr_var( $r, \'\', true, true ); }',
),
'strval' => array(
'title' => 'strval()',
'url' => 'https://php.net/strval',
'arg' => '$x',
'function' => '$r = strval( $x ); if ( is_string( $r ) ) { pr_str( $r ); } else { pr_var( $r, \'\', true, true ); }',
),
/*
* Loose type juggling.
*/
'juggle_int' => array(
'title' => '$x + 0',
'url' => 'https://php.net/language.types.type-juggling',
'arg' => '$x',
'function' => '
if ( ! is_array( $x ) && ( PHP_VERSION_ID > 50005 || ! is_object( $x ) ) ) {
$x = $x + 0;
if ( is_int( $x ) ) {
pr_int( $x );
}
else if ( is_float( $x ) ) {
pr_flt( $x );
}
else {
pr_var( $x, \'\', true, true );
}
}
else {
trigger_error( \'Unsupported operand types\', E_USER_ERROR );
}
', // Note: has PHP5 equivalent in class.vartype-php5.php.
),
'juggle_flt' => array(
'title' => '$x + 0.0',
'url' => 'https://php.net/language.types.type-juggling',
'arg' => '$x',
'function' => '
if ( ! is_array( $x ) && ( PHP_VERSION_ID > 50005 || ! is_object( $x ) ) ) {
$r = $x + 0.0;
if ( is_float( $r ) ) {
pr_flt( $r );
}
else if ( is_int( $r ) ) {
pr_int( $r );
}
else {
pr_var( $r, \'\', true, true );
}
}
else {
trigger_error( \'Unsupported operand types\', E_USER_ERROR );
}
', // Note: has PHP5 equivalent in class.vartype-php5.php.
),
'juggle_str' => array(
'title' => '$x . \'\'',
'url' => 'https://php.net/language.types.type-juggling',
'arg' => '$x',
'function' => 'pr_str( $x . \' \' );',
),
/*
* Test settype()
*/
'settype_array' => array(
'title' => 'settype ( $copy, \'array\' )',
'url' => 'https://php.net/settype',
'arg' => '$x',
'function' => '$pass = settype( $x, \'array\' ); if ( $pass === true ) { pr_var( $x, \'\', true, true ); } else { print \'FAILED\'; }',
),
'settype_bool' => array(
'title' => 'settype ( $copy, \'bool\' )',
'url' => 'https://php.net/settype',
'arg' => '$x',
'function' => '$pass = settype( $x, \'boolean\' ); if ( $pass === true ) { pr_bool( $x ); } else { print \'FAILED\'; }',
),
'settype_float' => array(
'title' => 'settype ( $copy, \'float\' )',
'url' => 'https://php.net/settype',
'arg' => '$x',
'function' => 'if ( PHP_VERSION_ID >= 40200 ) { $pass = settype( $x, \'float\' ); } else { $pass = settype( $x, \'double\' ); } if ( $pass === true ) { pr_flt( $x ); } else { print \'FAILED\'; }',
),
'settype_int' => array(
'title' => 'settype ( $copy, \'int\' )',
'url' => 'https://php.net/settype',
'arg' => '$x',
'function' => '$pass = settype( $x, \'integer\' ); if ( $pass === true ) { if ( is_int( $x ) ) { pr_int( $x ); } else { pr_var( $x, \'\', true, true ); } } else { print \'FAILED\'; }',
),
'settype_null' => array(
'title' => 'settype ( $copy, \'null\' )',
'url' => 'https://php.net/settype',
'arg' => '$x',
'function' => 'if ( PHP_VERSION_ID >= 40200 ) { $pass = settype( $x, \'null\' ); if ( $pass === true ) { pr_var( $x, \'\', true, true ); } else { print \'FAILED\'; } } else { print "E: not available (PHP 4.2.0+)\n"; }',
),
'settype_object' => array(
'title' => 'settype ( $copy, \'object\' )',
'url' => 'https://php.net/settype',
'arg' => '$x',
'function' => '$pass = settype( $x, \'object\' ); if ( $pass === true ) { pr_var( $x, \'\', true, true ); } else { print \'FAILED\'; }',
),
'settype_string' => array(
'title' => 'settype ( $copy, \'string\' )',
'url' => 'https://php.net/settype',
'arg' => '$x',
'function' => '$pass = settype( $x, \'string\' ); if ( $pass === true ) { pr_str( $x ); } else { print \'FAILED\'; }',
'notes' => array(
'<p>Depending on your error handling settings/exception catching and your PHP version, using <code>settype( $copy, \'string\' )</code> on an object which does not have a <code>__toString()</code> method will result either in the string <code>Object</code> or will return a (catchable) fatal error.</p>',
'<p>Before PHP < 5.2.0, the <code>__toString()</code> method was only available to echo/print statements, so casting to string would still result in <code>Object</code>, even when the object contained a <code>__toString()</code> method.</p>',
),
),
/*
* Tests using CastToType class.
*
* @see https://github.com/jrfnl/PHP-cast-to-type.git
*/
'cast_to_type_array' => array(
'title' => 'CastToType::_array ( $x )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ); pr_var( CastToType::_array( $x ), \'\', true, true ); } else { print \' \'; }',
'notes' => array(
'<p>Uses an external library</p>',
),
),
'cast_to_type_bool' => array(
'title' => 'CastToType::_bool ( $x )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; $r = CastToType::_bool( $x ); if ( is_bool( $r ) ) { pr_bool( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print \' \'; }',
'notes' => array(
'<p>Uses an <a href="https://github.com/jrfnl/PHP-cast-to-type.git" target="_blank">external library</a></p>',
),
),
'cast_to_type_float' => array(
'title' => 'CastToType::_float ( $x )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; $r = CastToType::_float( $x ); if ( is_float( $r ) ) { pr_flt( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print \' \'; }',
'notes' => array(
'<p>Uses an <a href="https://github.com/jrfnl/PHP-cast-to-type.git" target="_blank">external library</a></p>',
),
),
'cast_to_type_int' => array(
'title' => 'CastToType::_int ( $x )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; $r = CastToType::_int( $x ); if ( is_int( $r ) ) { pr_int( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print \' \'; }',
'notes' => array(
'<p>Uses an <a href="https://github.com/jrfnl/PHP-cast-to-type.git" target="_blank">external library</a></p>',
),
),
'cast_to_type_null' => array(
'title' => 'CastToType::_null ( $x )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; pr_var( CastToType::_null( $x ), \'\', true, true ); } else { print \' \'; }',
'notes' => array(
'<p>Uses an <a href="https://github.com/jrfnl/PHP-cast-to-type.git" target="_blank">external library</a></p>',
),
),
'cast_to_type_object' => array(
'title' => 'CastToType::_object ( $x )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; pr_var( CastToType::_object( $x ), \'\', true, true ); } else { print \' \'; }',
'notes' => array(
'<p>Uses an <a href="https://github.com/jrfnl/PHP-cast-to-type.git" target="_blank">external library</a></p>',
),
),
'cast_to_type_string' => array(
'title' => 'CastToType::_string ( $x )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; $r = CastToType::_string( $x ); if ( is_string( $r ) ) { pr_str( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print \' \'; }',
'notes' => array(
'<p>Uses an <a href="https://github.com/jrfnl/PHP-cast-to-type.git" target="_blank">external library</a></p>',
),
),
'cast_to_type_array_not_empty' => array(
'title' => 'CastToType::_array ( $x, false )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; pr_var( CastToType::_array( $x, false ), \'\', true, true ); } else { print \' \'; }',
'notes' => array(
'<p>Uses an external library</p>',
),
),
'cast_to_type_bool_not_empty_recurse_arrays' => array(
'title' => 'CastToType::_bool ( $x, false, false )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; $r = CastToType::_bool( $x, false, false ); if ( is_bool( $r ) ) { pr_bool( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print \' \'; }',
'notes' => array(
'<p>Uses an <a href="https://github.com/jrfnl/PHP-cast-to-type.git" target="_blank">external library</a></p>',
),
),
'cast_to_type_float_not_empty_recurse_arrays' => array(
'title' => 'CastToType::_float ( $x, false, false )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; $r = CastToType::_float( $x, false, false ); if ( is_float( $r ) ) { pr_flt( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print \' \'; }',
'notes' => array(
'<p>Uses an <a href="https://github.com/jrfnl/PHP-cast-to-type.git" target="_blank">external library</a></p>',
),
),
'cast_to_type_int_not_empty_recurse_arrays' => array(
'title' => 'CastToType::_int ( $x, false, false )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; $r = CastToType::_int( $x, false, false ); if ( is_int( $r ) ) { pr_int( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print \' \'; }',
'notes' => array(
'<p>Uses an <a href="https://github.com/jrfnl/PHP-cast-to-type.git" target="_blank">external library</a></p>',
),
),
'cast_to_type_object_not_empty' => array(
'title' => 'CastToType::_object ( $x, false )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; pr_var( CastToType::_object( $x, false ), \'\', true, true ); } else { print \' \'; }',
'notes' => array(
'<p>Uses an <a href="https://github.com/jrfnl/PHP-cast-to-type.git" target="_blank">external library</a></p>',
),
),
'cast_to_type_string_not_empty_recurse_arrays' => array(
'title' => 'CastToType::_string ( $x, false, false )',
'url' => 'https://github.com/jrfnl/PHP-cast-to-type.git',
'arg' => '$x',
'function' => 'if ( file_exists( APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\' ) ) { include_once APP_DIR . \'/include/PHP-cast-to-type/cast-to-type.php\'; $r = CastToType::_string( $x, false, false ); if ( is_string( $r ) ) { pr_str( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print \' \'; }',
'notes' => array(
'<p>Uses an <a href="https://github.com/jrfnl/PHP-cast-to-type.git" target="_blank">external library</a></p>',
),
),
/*
* Absolute numbers
*/
'abs' => array(
'title' => 'abs()',
'url' => 'https://php.net/abs',
'arg' => '$x',
'function' => '$r = abs( $x ); if ( is_float( $r ) ) { pr_flt( $r ); } else { pr_var( $r, \'\', true, true ); }',
),
/*
* Some rounding functions
*/
'floor' => array(
'title' => 'floor()',
'url' => 'https://php.net/floor',
'arg' => '$x',
'function' => '$r = floor( $x ); if ( is_float( $r ) ) { pr_flt( $r ); } else { pr_var( $r, \'\', true, true ); }',
),
'ceil' => array(
'title' => 'ceil()',
'url' => 'https://php.net/ceil',
'arg' => '$x',
'function' => '$r = ceil( $x ); if ( is_float( $r ) ) { pr_flt( $r ); } else { pr_var( $r, \'\', true, true ); }',
),
'round' => array(
'title' => 'round()',
'url' => 'https://php.net/round',
'arg' => '$x',
'function' => '$r = round( $x ); if ( is_float( $r ) ) { pr_flt( $r ); } else { pr_var( $r, \'\', true, true ); }',
),
/*
* Some string related functions
*/
'empty' => array(
'title' => 'empty()',
'url' => 'https://php.net/empty',
'arg' => '$x',
'function' => 'pr_bool( empty( $x ) );',
),
'strlen' => array(
'title' => 'strlen()',
'url' => 'https://php.net/strlen',
'arg' => '$x',
'function' => '$r = strlen( $x ); if ( is_int( $r ) ) { pr_int( $r ); } else { pr_var( $r, \'\', true, true ); }',
),
'count_chars' => array(
'title' => 'count_chars (…)',
'tooltip' => 'array_sum( count_chars( $x, 1 ) )',
'url' => 'https://php.net/count_chars',
'arg' => '$x',
'function' => 'pr_var( array_sum( count_chars( $x, 1 ) ), \'\', true, true );',
),
'str_shuffle' => array(
'title' => 'str_shuffle ( $x )',
'url' => 'https://php.net/str_shuffle',
'arg' => '$x',
'function' => 'pr_var( str_shuffle( $x ), \'\', true, true );',
),
'mb_strlen' => array(
'title' => 'mb_strlen()',
'url' => 'https://php.net/mb-strlen',
'arg' => '$x',
'function' => 'if ( function_exists( \'mb_strlen\' ) ) { $r = mb_strlen( $x, \'UTF-8\' ); if ( is_int( $r ) ) { pr_int( $r ); } else if ( is_bool( $r ) ) { pr_bool( $r ); } else { pr_var( $r, \'\', true, true ); } } else { print \'E: mbstring extension not installed\'; }',
),
'trim' => array(
'title' => 'trim()',
'url' => 'https://php.net/trim',
'arg' => '$x',
'function' => 'pr_var( trim( $x ), \'\', true, true );',
),
'char_access' => array(
'title' => '$x{2}',
'tooltip' => 'String character access by index.',
'url' => 'https://php.net/manual/en/language.types.string.php#language.types.string.substr',
'arg' => '$x',
'function' => 'if ( ! is_object( $x ) ) { pr_var( $x{2}, \'\', true, true ); } else { $class = get_class( $x ); trigger_error( \'Cannot use object of type \' . $class . \' as array\', E_USER_ERROR ); unset( $class ); }',
),
/*
* Some array related functions
*/
'count' => array(
'title' => 'count()',
'url' => 'https://php.net/count',
'arg' => '$x',
'function' => 'pr_int( count( $x ) );',
),
'count_mt_0' => array(
'title' => 'count() > 0',
'url' => 'https://php.net/count',
'arg' => '$x',
'function' => 'pr_bool( ( count( $x ) > 0 ) );',
),
'isset_0' => array(
'title' => 'isset ( $x[0] )',
'url' => 'https://php.net/isset',
'arg' => '$x',
'function' => 'if ( ! is_object( $x ) ) { pr_bool( isset( $x[0] ) ); } else { $class = get_class( $x ); trigger_error( \'Cannot use object of type \' . $class . \' as array\', E_USER_ERROR ); unset( $class ); }',
'notes' => array(
'<p>
Whether to use <code>isset()</code> or <code>array_key_exists()</code> depends on what you want to know:
</p>
<ul>
<li><code>isset( $array[$key] )</code> will tell you whether the array key exists <strong>and</strong> has been assigned a value.<br />
Used on its own it will give undesired results when used on strings as characters within a string can be approached using the <code>$x[]</code> syntax as well.<br />
Also, it will cause fatal errors when used on objects.</li>
<li><code>array_key_exists( $key, $array )</code> will tell you only whether the array key exists, but will not check whether it has a value assigned to it.<br />
Used on its own, it will show a warning if $array is not an array</li>
</ul>
<p>
This said, we can conclude that to avoid warnings and undesired results you will always have to use an <code>is_array()</code> first.<br />
Also note that <code>isset()</code> is faster than <code>array_key_exists()</code>, but as said above, will return false if no value has been assigned.
</p>',
),
),
'isset_foo' => array(
'title' => 'isset ( $x[\'foo\'] )',
'url' => 'https://php.net/isset',
'arg' => '$x',
'function' => 'if ( ! is_object( $x ) ) { pr_bool( isset( $x[\'foo\'] ) ); } else { $class = get_class( $x ); trigger_error( \'Cannot use object of type \' . $class . \' as array\', E_USER_ERROR ); unset( $class ); }',
'notes' => array(
'<p>
Whether to use <code>isset()</code> or <code>array_key_exists()</code> depends on what you want to know:
</p>
<ul>
<li><code>isset( $array[$key] )</code> will tell you whether the array key exists <strong>and</strong> has been assigned a value.<br />
Used on its own it will give undesired results when used on strings as characters within a string can be approached using the <code>$x[]</code> syntax as well.<br />
Also, it will cause fatal errors when used on objects.</li>
<li><code>array_key_exists( $key, $array )</code> will tell you only whether the array key exists, but will not check whether it has a value assigned to it.<br />
Used on its own, it will show a warning if $array is not an array</li>
</ul>
<p>
This said, we can conclude that to avoid warnings and undesired results you will always have to use an <code>is_array()</code> first.<br />
Also note that <code>isset()</code> is faster than <code>array_key_exists()</code>, but as said above, will return false if no value has been assigned.
</p>',
),
),
'array_key_exists' => array(
'title' => 'array_key_exists ( 0, $x )',
'url' => 'https://php.net/array_key_exists',
'arg' => '$x',
'function' => 'if ( function_exists( \'array_key_exists\' ) ) { $r = array_key_exists( 0, $x ); if ( is_bool( $r ) ) { pr_bool( array_key_exists( 0, $x ) ); } else { pr_var( $r, \'\', true, true ); } } else { print "E: not available (PHP 4.0.7+)\n"; }',
'notes' => array(
'<p>
Whether to use <code>isset()</code> or <code>array_key_exists()</code> depends on what you want to know:
</p>
<ul>
<li><code>isset( $array[$key] )</code> will tell you whether the array key exists <strong>and</strong> has been assigned a value.<br />
Used on its own it will give undesired results when used on strings as characters within a string can be approached using the <code>$x[]</code> syntax as well.<br />
Also, it will cause fatal errors when used on objects.</li>
<li><code>array_key_exists( $key, $array )</code> will tell you only whether the array key exists, but will not check whether it has a value assigned to it.<br />
Used on its own, it will show a warning if $array is not an array</li>
</ul>
<p>
This said, we can conclude that to avoid warnings and undesired results you will always have to use an <code>is_array()</code> first.<br />
Also note that <code>isset()</code> is faster than <code>array_key_exists()</code>, but as said above, will return false if no value has been assigned.
</p>',
),
),
'in_array' => array(
'title' => 'in_array ( \'s\', $x )',
'url' => 'https://php.net/in_array',
'arg' => '$x',
'function' => 'pr_bool( in_array( \'s\', $x ) );',
),
'array_count_values' => array(
'title' => 'array_count_values()',
'url' => 'https://php.net/array_count_values',
'arg' => '$x',
'function' => 'pr_var( array_count_values( $x ), \'\', true, true );',
),
'array_access_simple_string' => array(
'title' => '$x[\'foo\']',
'url' => 'https://php.net/manual/en/language.types.array.php',
'arg' => '$x',
'function' => 'if ( ! is_object( $x ) ) { pr_var( $x[\'foo\'], \'\', true, true ); } else { $class = get_class( $x ); trigger_error( \'Cannot use object of type \' . $class . \' as array\', E_USER_ERROR ); unset( $class ); }',
),
'array_access_multi_string' => array(
'title' => '$x[\'foo\'][\'bar\']',
'url' => 'https://php.net/manual/en/language.types.array.php',
'arg' => '$x',
'function' => 'if ( ! is_object( $x ) ) { if ( ! is_string( $x ) || ( is_string( $x ) && ( PHP_VERSION_ID > 50350 || PHP_VERSION_ID < 50000 ) ) ) { pr_var( $x[\'foo\'][\'bar\'], \'\', true, true ); } else { trigger_error( \'Cannot use string offset as an array\', E_USER_ERROR ); } } else { $class = get_class( $x ); trigger_error( \'Cannot use object of type \' . $class . \' as array\', E_USER_ERROR ); unset( $class ); }',
),
'array_filter' => array(
'title' => 'array_filter()',
'url' => 'https://php.net/array_filter',
'arg' => '$x',
'function' => 'pr_var( array_filter( $x ), \'\', true, true );',
),
'array_flip' => array(
'title' => 'array_flip()',
'url' => 'https://php.net/array_flip',
'arg' => '$x',
'function' => 'pr_var( array_flip( $x ), \'\', true, true );',
),
'array_reverse' => array(
'title' => 'array_reverse()',
'url' => 'https://php.net/array_reverse',
'arg' => '$x',
'function' => 'pr_var( array_reverse( $x ), \'\', true, true );',
),
'current' => array(
'title' => 'current()',
'url' => 'https://php.net/current',
'arg' => '$x',
'function' => 'pr_var( current( $x ), \'\', true, true );',
),
'key' => array(
'title' => 'key()',
'url' => 'https://php.net/key',
'arg' => '$x',
'function' => 'pr_var( key( $x ), \'\', true, true );',
),
'shuffle' => array(
'title' => 'shuffle ( $copy )',
'url' => 'https://php.net/shuffle',
'arg' => '$x',
'function' => '$pass = shuffle( $x ); if ( $pass === true) { pr_var( $x, \'\', true, true ); } else { print \'FAILED\'; }',
),
'sort' => array(
'title' => 'sort ( $copy )',
'url' => 'https://php.net/sort',
'arg' => '$x',
'function' => '$pass = sort( $x ); if ( $pass === true) { pr_var( $x, \'\', true, true ); } else { print \'FAILED\'; }',
),
/*
* Some object related functions.
*/
'is_a' => array(
'title' => 'is_a ( $x, \'TestObject\' )',
'url' => 'https://php.net/is_a',
'arg' => '$x',
'function' => '$c = \'TestObject\'; $r = is_a( $x, $c ); if ( is_bool( $r ) ) { pr_bool( $r ); } else { pr_var( $r, \'\', true, true ); }',
),
'instanceof' => array(
'title' => 'instanceof TestObject',
'url' => 'https://php.net/language.operators.type',
'arg' => '$x',
'function' => 'print "E: not available (PHP 5.0+)\n";', // Note: has PHP5 equivalent in class.vartype-php5.php.
),
'get_class' => array(
'title' => 'get_class()',
'url' => 'https://php.net/get_class',
'arg' => '$x',
'function' => '$r = get_class( $x ); if ( ! is_bool( $r ) ) { pr_var( $r, \'\', true, true ); } else { pr_bool( $r ); }',
),
'get_parent_class' => array(
'title' => 'get_parent_class()',
'url' => 'https://php.net/get_parent_class',
'arg' => '$x',
'function' => '$r = get_parent_class( $x ); if ( ! is_bool( $r ) ) { pr_var( $r, \'\', true, true ); } else { pr_bool( $r ); }',
),
'is_subclass_of' => array(
'title' => 'is_subclass_of ( $x, \'TestObject\' )',
'url' => 'https://php.net/is_subclass_of',
'arg' => '$x',
'function' => '$c = \'TestObject\'; $r = is_subclass_of( $x, $c ); if ( is_bool( $r ) ) { pr_bool( $r, \'\', true, true ); } else { pr_var( $r, \'\', true, true ); }',
),
/*
* Resource specific functions.
*/
'get_resource_type' => array(
'title' => 'get_resource_type()',
'url' => 'https://php.net/get_resource_type',
'arg' => '$x',
'function' => 'if ( function_exists( \'get_resource_type\' ) ) { $r = get_resource_type( $x ); if ( is_string( $r ) ) { pr_str( $r ); } else if ( is_bool( $r ) ) { pr_bool( $r ); } else { pr_var( $r, \'\', true, true ); } } else {print "E: not available (PHP 4.0.2+)\n"; }',
),
/*
* Test null comparisons.
*/
'null_cmp_loose' => array(
'title' => '== null',
'arg' => '$x',
'function' => 'pr_bool( $x == null );',
),
'null_cmp_strict' => array(
'title' => '=== null',
'arg' => '$x',
'function' => 'pr_bool( $x === null );',
),
'null_cmp_loose_str' => array(
'title' => '== \'null\'',
'arg' => '$x',
'function' => 'pr_bool( $x == \'null\' );',
),
'null_cmp_strict_str' => array(
'title' => '=== \'null\'',
'arg' => '$x',
'function' => 'pr_bool( $x === \'null\' );',
),
'null_cmp_rv_loose' => array(
'title' => 'null ==',
'arg' => '$x',
'function' => 'pr_bool( null == $x );',
),
'null_cmp_rv_strict' => array(
'title' => 'null ===',
'arg' => '$x',
'function' => 'pr_bool( null === $x );',
),
'null_cmp_rv_loose_str' => array(
'title' => '\'null\' ==',
'arg' => '$x',
'function' => 'pr_bool( \'null\' == $x );',
),
'null_cmp_rv_strict_str' => array(
'title' => '\'null\' ===',
'arg' => '$x',
'function' => 'pr_bool( \'null\' === $x );',
),
/*
* Boolean comparisons.
*/
'bool_cmp_true_loose' => array(
'title' => '== true',
'arg' => '$x',
'function' => 'pr_bool( $x == true );',
),
'bool_cmp_false_loose' => array(
'title' => '== false',
'arg' => '$x',
'function' => 'pr_bool( $x == false );',
),
'bool_cmp_true_strict' => array(
'title' => '=== true',
'arg' => '$x',
'function' => 'pr_bool( $x === true );',
),
'bool_cmp_false_strict' => array(
'title' => '=== false',
'arg' => '$x',
'function' => 'pr_bool( $x === false );',
),
'bool_cmp_true_loose_int' => array(
'title' => '== 1',
'arg' => '$x',
'function' => 'pr_bool( $x == 1 );',
),
'bool_cmp_false_loose_int' => array(
'title' => '== 0',
'arg' => '$x',
'function' => 'pr_bool( $x == 0 );',
),
'bool_cmp_true_strict_int' => array(
'title' => '=== 1',
'arg' => '$x',
'function' => 'pr_bool( $x === 1 );',
),
'bool_cmp_false_strict_int' => array(
'title' => '=== 0',
'arg' => '$x',
'function' => 'pr_bool( $x === 0 );',
),
'bool_cmp_true_loose_str' => array(
'title' => '== \'true\'',
'arg' => '$x',
'function' => 'pr_bool( $x == \'true\' );',
),
'bool_cmp_false_loose_str' => array(
'title' => '== \'false\'',
'arg' => '$x',
'function' => 'pr_bool( $x == \'false\' );',
),
'bool_cmp_true_strict_str' => array(
'title' => '=== \'true\'',
'arg' => '$x',
'function' => 'pr_bool( $x === \'true\' );',
),
'bool_cmp_false_strict_str' => array(
'title' => '=== \'false\'',
'arg' => '$x',
'function' => 'pr_bool( $x === \'false\' );',
),
'bool_cmp_rv_true_loose' => array(
'title' => 'true ==',
'arg' => '$x',
'function' => 'pr_bool( true == $x );',
),
'bool_cmp_rv_false_loose' => array(
'title' => 'false ==',
'arg' => '$x',
'function' => 'pr_bool( false == $x );',
),
'bool_cmp_rv_true_strict' => array(
'title' => 'true ===',
'arg' => '$x',
'function' => 'pr_bool( true === $x );',
),
'bool_cmp_rv_false_strict' => array(
'title' => 'false ===',
'arg' => '$x',
'function' => 'pr_bool( false === $x );',
),
'bool_cmp_rv_true_loose_int' => array(
'title' => '1 ==',
'arg' => '$x',
'function' => 'pr_bool( 1 == $x );',
),
'bool_cmp_rv_false_loose_int' => array(
'title' => '0 ==',
'arg' => '$x',
'function' => 'pr_bool( 0 == $x );',
),
'bool_cmp_rv_true_strict_int' => array(
'title' => '1 ===',
'arg' => '$x',
'function' => 'pr_bool( 1 === $x );',
),
'bool_cmp_rv_false_strict_int' => array(
'title' => '0 ===',
'arg' => '$x',
'function' => 'pr_bool( 0 === $x );',
),
'bool_cmp_rv_true_loose_str' => array(
'title' => '\'true\' ==',
'arg' => '$x',
'function' => 'pr_bool( \'true\' == $x );',
),
'bool_cmp_rv_false_loose_str' => array(
'title' => '\'false\' ==',
'arg' => '$x',
'function' => 'pr_bool( \'false\' == $x );',
),
'bool_cmp_rv_true_strict_str' => array(
'title' => '\'true\' ===',
'arg' => '$x',
'function' => 'pr_bool( \'true\' === $x );',
),
'bool_cmp_rv_false_strict_str' => array(
'title' => '\'false\' ===',
'arg' => '$x',
'function' => 'pr_bool( \'false\' === $x );',
),
/*
* Comparisons with int 0.
*/
'int_cmp_gt0' => array(
'title' => '> 0',
'arg' => '$x',
'function' => 'pr_bool( $x > 0 );',
),
'int_cmp_gte0' => array(
'title' => '>= 0',
'arg' => '$x',
'function' => 'pr_bool( $x >= 0 );',
),
'int_cmp_is0_loose' => array(
'title' => '== 0',
'arg' => '$x',
'function' => 'pr_bool( $x == 0 );',
),
'int_cmp_is0_strict' => array(
'title' => '=== 0',
'arg' => '$x',
'function' => 'pr_bool( $x === 0 );',
),
'int_cmp_not0_loose' => array(
'title' => '!= 0',
'arg' => '$x',
'function' => 'pr_bool( $x != 0 );',