preg_grep

Manuál PHP
Předcházející		Další

preg_grep

(PHP 4, PHP 5)

preg_grep -- Return array entries that match the pattern

Popis

array preg_grep ( string pattern, array input [, int flags] )

Returns the array consisting of the elements of the input array that match the given pattern.

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 an array indexed using the keys from the input array.

Verze Popis

4.2.0 The flags parameter was added.

4.0.4

Verze	Popis
4.2.0	The `flags` parameter was added.
4.0.4	Prior to this version, the returned array was indexed regardless of the keys of the `input` array. If you want to reproduce this old behavior, use array_values() on the returned array to reindex the values.

Prior to this version, the returned array was indexed regardless of the keys of the input array.

If you want to reproduce this old behavior, use array_values() on the returned array to reindex the values.

Příklad 1. preg_grep() example


<?php
// return all array elements
// containing floating point numbers
$fl_array = preg_grep("/^(\d+)?\.\d+$/", $array);
?>

Předcházející	Domů	Další
Pattern Syntax	Nahoru