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<?php $arr = $arr2 = []; $count = 1000000; for ($i = $count; $i >= 0; --$i) { $arr[$i] = rand(0, PHP_INT_MAX); } for ($i = $count / 10000; $i >= 0; --$i) { $arr2[ rand(0, PHP_INT_MAX) ] = true; } $t = microtime(true); $arr = array_flip($arr); $result = array_intersect_key($arr2, $arr); var_dump(microtime(true) - $t);
Output for 7.3.0 - 7.3.12, 7.4.0
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 41943040 bytes) in /in/icUce on line 16
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.25
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 37748736 bytes) in /in/icUce on line 16
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/icUce on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/icUce on line 3
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 '[' in /in/icUce on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/icUce on line 3
Process exited with code 255.
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175.95 ms | 401 KiB | 250 Q