PHP function usort()
Sort an array by values using a user-defined comparison function
Availability in PHP 4.0
Sort an array by values using a user-defined comparison function
Parameters
| Parameter | Data type | Default value | Note |
|---|---|---|---|
$array |
array |
not | The input array. |
$cmp_function |
callback |
not | The comparison function must return an integer less than, equal to, or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second. |
Return values
bool
Returns true on success, otherwise false on failure.
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