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<?php $finalData = "This is a test of crc32b why is this different"; echo crc32($finalData); echo "\n"; $hash = hash('crc32b', $finalData, true); $crc = unpack('V', ); echo $hash; echo $crc[1]; 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
2117014605 Fatal error: Uncaught ArgumentCountError: unpack() expects at least 2 arguments, 1 given in /in/2fSWT:9 Stack trace: #0 /in/2fSWT(9): unpack('V') #1 {main} thrown in /in/2fSWT on line 9
Process exited with code 255.
Output for 7.4.3 - 7.4.33
2117014605 Warning: unpack() expects at least 2 parameters, 1 given in /in/2fSWT on line 9 ~/M Notice: Trying to access array offset on value of type null in /in/2fSWT on line 11
Output for 7.3.16 - 7.3.33
2117014605 Warning: unpack() expects at least 2 parameters, 1 given in /in/2fSWT on line 9 ~/M
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, 5.4.0 - 5.4.34, 7.2.29 - 7.2.33
Parse error: syntax error, unexpected ')' in /in/2fSWT on line 9
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/2fSWT on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/2fSWT on line 9
Process exited with code 255.

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