freelance programmers outsource from india freelance programmers  chennai india programmers freelance programmers  freelance php coder freelance outsource scripts freelance programmers programming complicated perl patterns freelance programmers php module installation freelance programmers
freelance programmers  outsource from india freelance programmers  perl installation and configuration freelance programmers  php installation linux system freelance programmers administration US$15,US$19,US$11,US$10 cheap programmer
india outsource outsource india chennai india programmers php perl mysql freelance freelance programmer
SHOWCASE of php and perl scripts CONTACT US for php custom perl scripts
HOME
 

Array Operators

Table 15-8. Array Operators

ExampleNameResult
$a + $bUnionUnion of $a and $b.
$a == $bEqualityTRUE if $a and $b have the same key/value pairs.
$a === $bIdentityTRUE if $a and $b have the same key/value pairs in the same order and of the same types.
$a != $bInequalityTRUE if $a is not equal to $b.
$a <> $bInequalityTRUE if $a is not equal to $b.
$a !== $bNon-identityTRUE if $a is not identical to $b.

The + operator appends the right handed array to the left handed, whereas duplicated keys are NOT overwritten.

<?php
$a
= array("a" => "apple", "b" => "banana");
$b = array("a" => "pear", "b" => "strawberry", "c" => "cherry");

$c = $a + $b; // Union of $a and $b
echo "Union of \$a and \$b: \n";
var_dump($c);

$c = $b + $a; // Union of $b and $a
echo "Union of \$b and \$a: \n";
var_dump($c);
?>

When executed, this script will print the following:
Union of $a and $b:
array(3) {
  ["a"]=>
  string(5) "apple"
  ["b"]=>
  string(6) "banana"
  ["c"]=>
  string(6) "cherry"
}
Union of $b and $a:
array(3) {
  ["a"]=>
  string(4) "pear"
  ["b"]=>
  string(10) "strawberry"
  ["c"]=>
  string(6) "cherry"
}

Elements of arrays are equal for the comparison if they have the same key and value.

Example 15-5. Comparing arrays

<?php
$a
= array("apple", "banana");
$b = array(1 => "banana", "0" => "apple");

var_dump($a == $b); // bool(true)
var_dump($a === $b); // bool(false)
?>

See also the manual sections on the Array type and Array functions.

Copyright © 1997 - 2007 by the PHP Documentation Group. This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later. A copy of the Open Publication License is distributed with this manual, the latest version is presently available at http://www.opencontent.org/openpub/. Please see full copyright text at http://www.php.net/manual/en/copyright.php Original version of the above documentation is available at http://www.php.net/manual/en/



  1. Please click on Sqlfusion Simple Form Generator Package
  2. Please Also click on our Web developers Showcase



Web design and Programming Copyright @ Chrisranjana.com 1999-2007. Website designed and Webdevelopers and Website programmed by Web developers and Software programmers. We do excellent software development in asp and .net c# csharp also