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<?php function cmp(& $reference, & $value) { $tmp = & $reference; $reference = uniqid(mt_rand()); $isReference = ($value === $reference); $reference = & $tmp; return $isReference; } $value = uniqid(); $reference = & $value; var_dump(cmp($reference, $value)); $value = new \exception(); var_dump(cmp($reference, $value)); var_dump(cmp($reference, $value = new \exception()));
Output for 4.3.0 - 4.3.1, 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/UrMbA on line 16 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/UrMbA on line 19 Warning: uniqid() expects at least 1 parameter, 0 given in /in/UrMbA on line 12 bool(true) Fatal error: Cannot instantiate non-existent class: exception in /in/UrMbA on line 16
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/UrMbA on line 16 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/UrMbA on line 19 bool(true) bool(true) bool(true)
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
bool(true) bool(true) bool(true)
Output for 7.0.0 - 7.0.6
bool(true) bool(true) bool(false)
Output for 7.0.7 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0
bool(true) bool(true) Notice: Only variables should be passed by reference in /in/UrMbA on line 19 bool(false)
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37.6 ms | 1170 KiB | 17 Q