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run code in 300+ PHP versions simultaneously
<?php ob_start('assert'); echo '$a=create_function("","phpinf()")'; ob_get_flush();
Output for 5.4.0 - 5.4.7, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
$a=create_function("","phpinf()") Warning: Cannot call assert() with string argument dynamically in /in/Z4N8G on line 5
Output for 7.0.0 - 7.0.33
$a=create_function("","phpinf()") Warning: assert(): 9: "$a=create_function("","phpinf()")" failed in /in/Z4N8G on line 5 Parse error: syntax error, unexpected '}' in /in/Z4N8G(5) : assert code(1) : runtime-created function on line 1
Process exited with code 255.
Output for 5.4.8 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40

Process exited with code 255.
preferences:
259.43 ms | 402 KiB | 377 Q