PHP is_iterable() function

Author：Eve Cole Update Time：2024-12-29 14:00:01

The is_numeric() function is used to detect whether a variable is an iterable value.

PHP version requirements: PHP 7 >= 7.1.0

grammar

 bool is_iterable (mixed $var)

Parameter description:

$var: The variable to be detected, which can be an array or an object that implements the Traversable interface.

return value

Returns TRUE if the specified variable is an iterable object, otherwise returns FALSE.

Example

<?php var_dump ( is_iterable ( [ 1 , 2 , 3 ] ) ) ; // bool(true) var_dump ( is_iterable ( new ArrayIterator ( [ 1 , 2 , 3 ] ) ) ) ; // bool(true) var_dump ( is_iterable ( ( function ( ) { yield 1 ; } ) ( ) ) ) ; // bool(true) var_dump ( is_iterable ( 1 ) ) ; // bool(false) var_dump ( is_iterable ( new stdClass ( ) ) ) ; // bool(false) ?>

The output is:

 bool(true)bool(true)bool(true)bool(false)bool(false)