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数据类型处代码错误 原代码如下:
// 字符串 $str = '123'; // 字符串拼接 $str2 = '123'.'哈哈哈'; // 整数 $numA = 1; //正数 $numB = -2;//负数 // 浮点数 $x = 1.1; // 布尔 $a = true; $b = false; // 普通数组:数组中可以放 数字、字符串、布尔值等,不限制类型。 $arr1 = array('123', 123); echo $arr1[0]; // 关系型数组:类似于json格式 $arr2 = $array(`name`=>`smyhvae`, `age`=>`26`); echo $arr2[`name`]; //获取时,通过 key 来获取
应改为
// 字符串 $str = '123'; // 字符串拼接 $str2 = '123'.'哈哈哈'; // 整数 $numA = 1; //正数 $numB = -2;//负数 // 浮点数 $x = 1.1; // 布尔 $a = true; $b = false; // 普通数组:数组中可以放 数字、字符串、布尔值等,不限制类型。 $arr1 = array('123', 123); echo $arr1[0]; // 关系型数组:类似于json格式 $arr2 = array('name'=>'smyhvae', 'age'=>'26'); echo $arr2['name']; //获取时,通过 key 来获取
类与对象处代码错误 原代码如下
class Fox{ public $name = 'itcast'; public $age = 10; } $fox = new $fox; // 对象属性取值 $name = $fox->name; // 对象属性赋值 $fox->name = '小狐狸';
class Fox{ public $name = 'itcast'; public $age = 10; } $fox = new Fox; // 对象属性取值 $name = $fox->name; // 对象属性赋值 $fox->name = '小狐狸';
The text was updated successfully, but these errors were encountered:
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数据类型处代码错误
原代码如下:
应改为
类与对象处代码错误
原代码如下
应改为
The text was updated successfully, but these errors were encountered: