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e12b9df05d
Make user-exposed sorts stable, by storing the position of elements in the original array, and using those positions as a fallback comparison criterion. The base sort is still hybrid q/insert. The use of true/false comparison functions is deprecated (but still supported) and should be replaced by -1/0/1 comparison functions, driven by the <=> operator. RFC: https://wiki.php.net/rfc/stable_sorting Closes GH-5236.
16 lines
212 B
PHP
16 lines
212 B
PHP
--TEST--
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usort() is stable
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--FILE--
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<?php
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$array = range(0, 10000);
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usort($array, function($a, $b) {
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// Everything is equal!
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return 0;
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});
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var_dump($array === range(0, 10000));
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?>
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--EXPECT--
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bool(true)
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