(PHP 4, PHP 5, PHP 7)
Return array entries that match the pattern
array preg_grep ( string $pattern, array $input [, int $flags = 0 ] )
Returns the array consisting of the elements of the input array that match the given pattern.
Parameters:
pattern
The pattern to search for, as a string.
input
The input array.
flags
If set to PREG_GREP_INVERT, this function returns the elements of the input array that do not match the given pattern.
Returns:
Returns an array indexed using the keys from the input array.
Examples:
preg_grep() example
<?php
// return all array elements
// containing floating point numbers
$fl_array = preg_grep("/^(\d+)?\.\d+$/", $array);
?>
See also:
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