The in_array Function
The in_array function checks for the presence
of a given element in an array.
Syntax
in_array(mixed $needle, array $haystack, bool $strict = false): bool
Example
Let's check if the array $arr
contains an element with the value 3:
<?php
$arr = ['a', 'b', 'c', 'd', 'e'];
$res = in_array('c', $arr);
var_dump($res);
?>
Code execution result:
true
See Also
-
the
array_key_existsfunction,
which checks for the presence of a specified key in an array -
the
str_containsfunction,
which checks for the occurrence of a character in a string
