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run code in 300+ PHP versions simultaneously
<?php function foo(&$str) { $str = 'xyz'; return $str; } $o = "abc"; // No errors foo($o); call_user_func('foo', $o); call_user_func('foo', [$o]); $a[] = "abc"; $a[] = "abc"; $a[] = "abc"; // Warning: Parameter 1 to foo() expected to be a reference, value given in call_user_func('foo', array_slice($a, 0, 1)); var_dump($a);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: foo(): Argument #1 ($str) must be passed by reference, value given in /in/KNM3k on line 11 Warning: foo(): Argument #1 ($str) must be passed by reference, value given in /in/KNM3k on line 12 Warning: foo(): Argument #1 ($str) must be passed by reference, value given in /in/KNM3k on line 19 array(3) { [0]=> string(3) "abc" [1]=> string(3) "abc" [2]=> string(3) "abc" }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: foo(): Argument #1 ($str) must be passed by reference, value given in /in/KNM3k on line 11 Warning: foo(): Argument #1 ($str) must be passed by reference, value given in /in/KNM3k on line 12 Warning: foo(): Argument #1 ($str) must be passed by reference, value given in /in/KNM3k on line 19 array(3) { [0]=> string(3) "abc" [1]=> string(3) "abc" [2]=> string(3) "abc" }
Output for 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Parameter 1 to foo() expected to be a reference, value given in /in/KNM3k on line 11 Warning: Parameter 1 to foo() expected to be a reference, value given in /in/KNM3k on line 12 Warning: Parameter 1 to foo() expected to be a reference, value given in /in/KNM3k on line 19 array(3) { [0]=> string(3) "abc" [1]=> string(3) "abc" [2]=> string(3) "abc" }
Output for 7.0.0 - 7.0.8, 7.0.10 - 7.0.20
Warning: Parameter 1 to foo() expected to be a reference, value given in /in/KNM3k on line 19 array(3) { [0]=> string(3) "abc" [1]=> string(3) "abc" [2]=> string(3) "abc" }
Output for 7.0.9
Warning: Parameter 1 to foo() expected to be a reference, value given in /in/KNM3k on line 11 Warning: Parameter 1 to foo() expected to be a reference, value given in /in/KNM3k on line 19 array(3) { [0]=> string(3) "abc" [1]=> string(3) "abc" [2]=> string(3) "abc" }
Output for 5.6.0 - 5.6.26
Warning: Parameter 1 to foo() expected to be a reference, value given in /in/KNM3k on line 11 array(3) { [0]=> string(3) "abc" [1]=> string(3) "abc" [2]=> string(3) "abc" }
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