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run code in 150+ php & hhvm versions
Bugs & Features
<?php $gb = 1024 * 1024 * 1024; $str = str_repeat('a', 2 * $gb); var_dump(strlen($str)); // gives int(-2147483648)
Output for 7.0.0 - 7.1.0
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 2147483680 bytes) in /in/fMSSC on line 3
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: Uncaught Error: String length exceeded 2^31-2: 2147483648 in /in/fMSSC:3 Stack trace: #0 {main}
Process exited with code 255.
Output for hhvm-3.10.0
Fatal error: String length exceeded 2^31-2: 2147483648 in /in/fMSSC on line 3
Process exited with code 255.
Output for 5.4.41 - 5.4.45, 5.5.25 - 5.5.38, 5.6.9 - 5.6.28
Warning: str_repeat(): Result is too big, maximum 2147483647 allowed in /in/fMSSC on line 3 int(0)
Output for 5.2.2 - 5.4.40, 5.5.0 - 5.5.24, 5.6.0 - 5.6.8
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 2147483649 bytes) in /in/fMSSC on line 3
Process exited with code 255.
Output for 5.2.1
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate -2147483647 bytes) in /in/fMSSC on line 3
Process exited with code 255.
Output for 5.2.0
Fatal error: Out of memory (allocated 262144) (tried to allocate -2147483647 bytes) in /in/fMSSC on line 3
Process exited with code 255.
Output for 5.1.6
No input file specified.
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 5.1.5

Process exited with code 137.
Output for 4.4.2 - 4.4.3, 5.1.2 - 5.1.4
Warning: str_repeat(): You may not create strings longer than 2147483647 bytes in /in/fMSSC on line 3 int(0)
Output for 4.3.2 - 4.4.1, 5.0.0 - 5.0.5, 5.1.1
Warning: str_repeat(): You may not create strings longer then 2147483647 bytes in /in/fMSSC on line 3 int(0)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/fMSSC on line 4
Process exited with code 255.
Output for 4.4.4 - 4.4.9
FATAL: emalloc(): Unable to allocate 2147483649 bytes
Process exited with code 1.