Difference between sort() function & asort() function in php

 What is the difference between the sort() function and asort() function in php ?

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Basically, sort() and asort() functions are used to sort the array in php.

Sort Array in Ascending Order – sort()

Syntax
sort(array,sorting type);

sort type is Optional. Specifies how to sort the array values.

• SORT_REGULAR – Default. Treat values as they are (dont change types)
• SORT_NUMERIC – Treat values numerically
• SORT_STRING – Treat values as strings
• SORT_LOCALE_STRING – Treat values as strings, based on local settings

<?php
$a = array(1,3,5,8,2);
sort($a);
?>

Sort the elements of the $a array in ascending numerical order:
so the output of the above code will be –

Array
(
    [0] => 1
    [4] => 2
    [1] => 3
    [2] => 5
    [3] => 8
)

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asort() Function

The asort() function sorts an associative array in ascending order, according to the value.

Syntax
asort(array,sortingtype);

sorttype is Optional. Specifies how to sort the array values.

• 0 = SORT_REGULAR – Default. Compare items normally (don’t change types)
• 1 = SORT_NUMERIC – Compare items numerically
• 2 = SORT_STRING – Compare items as strings
• 3 = SORT_LOCALE_STRING – Compare items as strings, based on current locale
• 4 = SORT_NATURAL – Compare items as strings using natural ordering

<?php
$a = array(1,3,5,8,2);
asort($a);
?>

The asort() function sorts an array by the values. The values keep their original keys (index).
so the output of the above code will be –

Array
(
    [0] => 1
    [4] => 2
    [1] => 3
    [2] => 5
    [3] => 8
)

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