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.
Note: This function
assigns new keys for the elements in array.
It will remove any existing keys you may have assigned, rather
than just reordering the keys.
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.
Before PHP 6, it uses the system locale, which can be changed using
setlocale(). Since PHP 6, you must use the
i18n_loc_set_default() function.
Note:
The second parameter was added in PHP 4.
| Warning |
Be careful when sorting arrays with mixed types values because
sort() can produce unpredictable results.
|
See also arsort(),
asort(), ksort(),
krsort(),
natsort(), natcasesort(),
rsort(), usort(),
array_multisort(), and
uksort().
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