PHP is_array() 检测变量是否是数组的实现方法_php实例
is_array()
PHP is_array() 函数用于检测变量是否是数组,这个函数尤其会用于一些安全性检查方面(如表单或 SESSION 检查等)。
语法:
bool is_array ( mixed var )如果 var 是 array,则返回 TRUE,否则返回 FALSE 。
例子:
<?php $arr_age = array(18, 20, 25); if(is_array($arr_age)){ echo '变量 $arr_age 是一个数组'; } else { echo '变量 $arr_age 不是一个数组'; } ?>
运行该例子输出:
变量 $arr_age 是一个数组
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