PHP is_array() implementation method to detect whether a variable is an array, is_array array

PHP is_array() implementation method to detect whether a variable is an array, is_array array

is_array()

PHP is_array() function is used to detect whether a variable is an array. This function is especially used for some security checks (such as form or SESSION checks, etc.).

Grammar:

bool is_array (mixed var) Returns TRUE if var is an array, otherwise returns FALSE.

Example:

<&#63;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';
}
&#63;>

Run this example output:

The variable $arr_age is an array

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