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<?php $a = array('1','2','3'); var_dump(strcmp("test",$a) == 0); var_dump( is_null(strcmp("test",$a)) ); function Test() {return;} $null = Test(); var_dump(is_null($null)); $s = (string) array(); var_dump($s);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: strcmp(): Argument #2 ($string2) must be of type string, array given in /in/oqQ0J:3 Stack trace: #0 /in/oqQ0J(3): strcmp('test', Array) #1 {main} thrown in /in/oqQ0J on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Warning: strcmp() expects parameter 2 to be string, array given in /in/oqQ0J on line 3 bool(true) Warning: strcmp() expects parameter 2 to be string, array given in /in/oqQ0J on line 4 bool(true) bool(true) Notice: Array to string conversion in /in/oqQ0J on line 8 string(5) "Array"
Output for 5.3.0 - 5.3.29, 7.3.32 - 7.3.33, 7.4.26
Warning: strcmp() expects parameter 2 to be string, array given in /in/oqQ0J on line 3 bool(true) Warning: strcmp() expects parameter 2 to be string, array given in /in/oqQ0J on line 4 bool(true) bool(true) string(5) "Array"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Notice: Array to string conversion in /in/oqQ0J on line 3 bool(false) Notice: Array to string conversion in /in/oqQ0J on line 4 bool(false) bool(true) string(5) "Array"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Notice: Array to string conversion in /in/oqQ0J on line 3 bool(false) Notice: Array to string conversion in /in/oqQ0J on line 4 bool(false) bool(true) Notice: Array to string conversion in /in/oqQ0J on line 8 string(5) "Array"

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292.75 ms | 402 KiB | 464 Q