You want to define a custom sorting routine to order an array. However, instead of using a function, you want to use an object method.
Pass in an array holding a class name and method in place of the function name:
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usort($access_times, array('dates', 'compare')); |
As with a custom sort function, the object method needs to take two input arguments and return 1, 0, or −1, depending on whether the first parameter is larger than, equal to, or less than the second:
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class sort { // reverse-order string comparison static function strrcmp($a, $b) { return strcmp($b, $a); } } usort($words, array('sort', 'strrcmp')); |
It must also be declared as static. Alternatively, you can use an instantiated object:
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class Dates { public function compare($a, $b) { /* compare here */ } } $dates = new Dates; usort($access_times, array($dates, 'compare')); |
