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run code in 150+ php & hhvm versions
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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() < $b->val()) ? -1 : 1; }); print_r($arr);
Output for 7.0.0 - 7.1.0
comparing 53 with 200 Fatal error: Uncaught Error: Call to undefined method test::val() in /in/0944q:28 Stack trace: #0 [internal function]: {closure}(Object(test), Object(test)) #1 /in/0944q(29): uasort(Array, Object(Closure)) #2 {main} thrown in /in/0944q on line 28
Process exited with code 255.
Output for hhvm-3.12.0
comparing 53 with 200 Fatal error: Uncaught Error: Call to undefined method test::val() in /in/0944q:28 Stack trace: #0 /in/0944q(29): Closure$getVal() #1 {main}
Process exited with code 255.
Output for hhvm-3.10.0
comparing 53 with 200 Fatal error: Call to undefined method test::val() in /in/0944q on line 28
Process exited with code 255.
Output for 5.3.0 - 5.6.28
comparing 200 with 53 Fatal error: Call to undefined method test::val() in /in/0944q on line 28
Process exited with code 255.
Output for 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/0944q on line 21
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/0944q on line 21
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/0944q on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/0944q on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/0944q on line 4
Process exited with code 255.