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(PHP 3, PHP 4, PHP 5)

sort -- Sort an array

Description

bool sort ( array &array [, int sort_flags] )

This function sorts an array. Elements will be arranged from lowest to highest when this function has completed.

Returns TRUE on success or FALSE on failure.

Example 1. sort() example

<?php

$fruits = array("lemon", "orange", "banana", "apple");
sort($fruits);
foreach ($fruits as $key => $val) {
    echo "fruits[" . $key . "] = " . $val . "\n";
}

?>

The above example will output:

fruits[0] = apple
fruits[1] = banana
fruits[2] = lemon
fruits[3] = orange

The fruits have been sorted in alphabetical order.

The optional second parameter sort_flags may be used to modify the sorting behavior using these values:

Sorting type flags:

SORT_REGULAR - compare items normally (don't change types)

SORT_NUMERIC - compare items numerically

SORT_STRING - compare items as strings

SORT_LOCALE_STRING - compare items as strings, based on the current locale. Added in PHP 4.4.0 and 5.0.2.

Warning

Be careful when sorting arrays with mixed types values because sort() can produce unpredictable results.

Related Function(s)

arsort()

asort()

ksort()

natsort()

natcasesort()

rsort()

usort()

array_multisort()

uksort()