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2010-05-26T07:02:45Z

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==array_unique( ) filters an array so that a value can only appear once.==



<source lang="html4strict">

<?
$toppings2 = array("Peppers", "Ham", "Cheese", "Peppers");
$toppings2 = array_unique($toppings2);
?>

</source>

==To get the unique values in an array: array_unique() function==



<source lang="html4strict">

<?
$countries= array("Germany" => "German", "France" => "French", "Spain" => "Spanish");
$languages = array_unique($countries);
printf("%s,", var_export($languages, TRUE));
?>

</source>

==Working with Unique Values==



<source lang="html4strict">

<?php
$countries = array( "USA" => "English", "Spain" => "Spanish",
"Brasil" => "Portuguese", "UK" => "English",
"France" => "French", "Argentina" => "Spanish");
$languages = array_unique($countries);
printf("<pre>%s</pre>\n", var_export($languages, TRUE));
$languages = array_unique( array_values($countries) );
printf("<pre>%s</pre>\n", var_export($languages, TRUE));
$languages = array_values( array_unique($countries) );
printf("<pre>%s</pre>\n", var_export($languages, TRUE));
?>

</source>

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