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<?php $a=array( "foo" => "bar", "bar" => "foo", ); $b=0; echo $b+NULL; var_dump(strcmp($a, "foo")); echo "\n"; ; ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
0 Fatal error: Uncaught TypeError: strcmp(): Argument #1 ($string1) must be of type string, array given in /in/cWA9k:9 Stack trace: #0 /in/cWA9k(9): strcmp(Array, 'foo') #1 {main} thrown in /in/cWA9k on line 9
Process exited with code 255.
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, 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
0 Warning: strcmp() expects parameter 1 to be string, array given in /in/cWA9k on line 9 NULL
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
0 Notice: Array to string conversion in /in/cWA9k on line 9 int(-37)

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