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<?php $arr = new \SplFixedArray(2); $arr[0] = 'raoul'; $ser = serialize($arr); $unser = unserialize($ser); var_dump($unser, $unser[0]);
Output for 5.4.18 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.4.16, 8.5.0 - 8.5.1
object(SplFixedArray)#2 (2) { [0]=> string(5) "raoul" [1]=> NULL } string(5) "raoul"
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.17
Fatal error: Uncaught exception 'RuntimeException' with message 'Index invalid or out of range' in /in/BpZEl:7 Stack trace: #0 /in/BpZEl(7): unknown() #1 {main} thrown in /in/BpZEl on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/BpZEl on line 3 Fatal error: Class 'SplFixedArray' not found in /in/BpZEl on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/BpZEl on line 3 Fatal error: Cannot instantiate non-existent class: splfixedarray in /in/BpZEl on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/BpZEl on line 3 Fatal error: Cannot instantiate non-existent class: splfixedarray in /in/BpZEl on line 3

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