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<?php class test { protected $val; public function __construct($val) { $this->val = $val; } public function getVal() { return $this->val; } } $arr = array( 'one' => new test(53), 'two' => new test(200), 'three' => new test(100) ); uasort($arr, function (test $a, test $b) { echo 'comparing '.$a->getVal().' with '.$b->getVal(); if ($a->getVal() == $b->getVal()) { return 0; } return ($a->getVal() < $b->getVal()) ? -1 : 1; }); print_r($arr);
Output for git.master, git.master_jit, rfc.property-hooks
comparing 53 with 200comparing 200 with 100comparing 53 with 100Array ( [one] => test Object ( [val:protected] => 53 ) [three] => test Object ( [val:protected] => 100 ) [two] => test Object ( [val:protected] => 200 ) )

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