IT. Expert System.

PHP

Apply a user function recursively to every member of an array


array_walk_recursive

(PHP 5)

array_walk_recursiveApply a user function recursively to every member of an array

Description

bool array_walk_recursive ( array &$input , callable $funcname [, mixed $userdata = NULL ] )

Applies the user-defined function funcname to each element of the input array. This function will recurse into deeper arrays.

Parameters

input

The input array.

funcname

Typically, funcname takes on two parameters. The input parameter's value being the first, and the key/index second.

Note:

If funcname needs to be working with the actual values of the array, specify the first parameter of funcname as a reference. Then, any changes made to those elements will be made in the original array itself.

userdata

If the optional userdata parameter is supplied, it will be passed as the third parameter to the callback funcname.

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 array_walk_recursive() example

<?php
$sweet 
= array('a' => 'apple''b' => 'banana');
$fruits = array('sweet' => $sweet'sour' => 'lemon');

function 
test_print($item$key)
{
    echo 
"$key holds $item\n";
}

array_walk_recursive($fruits'test_print');
?>

The above example will output:

 a holds apple b holds banana sour holds lemon 

You may notice that the key 'sweet' is never displayed. Any key that holds an array will not be passed to the function.

See Also

  • array_walk() - Apply a user function to every member of an array
  • information about the callback type



Content

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary

License.
All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.
Copyright 2016 © ELTASK.COM. All rights reserved.
Site is optimized for mobile devices.
Downloads: 424 / 158691863. Delta: 0.02344 с