在PHP中is_array的用法实例

在PHP中，is_array()函数用于检查给定的值是否是一个数组

示例1：检查字符串是否为数组

$str = "Hello, World!"; if (is_array($str)) {     echo "The given value is an array."; } else {     echo "The given value is not an array."; } // 输出：The given value is not an array. 

示例2：检查整数是否为数组

$num = 42; if (is_array($num)) {     echo "The given value is an array."; } else {     echo "The given value is not an array."; } // 输出：The given value is not an array. 

示例3：检查多维数组是否为数组

$multi_dim_array = array(     "name" => "John",     "age" => 30,     "city" => "New York" );  if (is_array($multi_dim_array)) {     echo "The given value is an array."; } else {     echo "The given value is not an array."; } // 输出：The given value is an array. 

示例4：检查对象是否为数组

class Person {     public $name;     public $age; }  $person = new Person(); $person->name = "John"; $person->age = 30;  if (is_array($person)) {     echo "The given value is an array."; } else {     echo "The given value is not an array."; } // 输出：The given value is not an array.