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<?php $items = array(10, 20, 30); $items1 = array(11, 21, 31); $udiff = array_udiff($items, $items, function ($a, $b) { $result = $a === $b; print("Comparing $a to $b, result is $result\n"); return $result; }); var_dump($udiff);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Comparing 10 to 20, result is Deprecated: array_udiff(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/jetXp on line 7 Comparing 20 to 10, result is Comparing 20 to 30, result is Comparing 30 to 20, result is Comparing 10 to 20, result is Comparing 20 to 10, result is Comparing 20 to 30, result is Comparing 30 to 20, result is Comparing 10 to 10, result is 1 Comparing 10 to 20, result is Comparing 20 to 10, result is Comparing 10 to 20, result is Comparing 20 to 10, result is Comparing 20 to 30, result is Comparing 30 to 20, result is array(0) { }
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 Comparing 10 to 20, result is Deprecated: array_udiff(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/jetXp on line 7 Comparing 20 to 10, result is Comparing 20 to 30, result is Comparing 30 to 20, result is Comparing 10 to 20, result is Comparing 20 to 10, result is Comparing 20 to 30, result is Comparing 30 to 20, result is Comparing 10 to 10, result is 1 Comparing 10 to 20, result is Comparing 20 to 10, result is Comparing 10 to 20, result is Comparing 20 to 10, result is Comparing 20 to 30, result is Comparing 30 to 20, result is array(0) { }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Comparing 10 to 20, result is Deprecated: array_udiff(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/jetXp on line 11 Comparing 20 to 10, result is Comparing 20 to 30, result is Comparing 30 to 20, result is Comparing 10 to 20, result is Comparing 20 to 10, result is Comparing 20 to 30, result is Comparing 30 to 20, result is Comparing 10 to 10, result is 1 Comparing 10 to 20, result is Comparing 20 to 10, result is Comparing 10 to 20, result is Comparing 20 to 10, result is Comparing 20 to 30, result is Comparing 30 to 20, result is array(0) { }
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Comparing 10 to 20, result is Comparing 20 to 30, result is Comparing 10 to 20, result is Comparing 20 to 30, result is Comparing 10 to 10, result is 1 Comparing 10 to 20, result is Comparing 10 to 20, result is Comparing 20 to 30, result is array(0) { }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Comparing 20 to 10, result is Comparing 30 to 20, result is Comparing 20 to 10, result is Comparing 30 to 20, result is Comparing 30 to 30, result is 1 Comparing 30 to 20, result is Comparing 30 to 20, result is Comparing 20 to 10, result is array(0) { }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/jetXp on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/jetXp on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/jetXp on line 7
Process exited with code 255.
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