3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); function a(float b): string { return b; } echo a(4.0);
Output for 7.0.0
Parse error: syntax error, unexpected 'b' (T_STRING), expecting variable (T_VARIABLE) in /in/aEI2h on line 3
Process exited with code 255.
Output for 5.6.8 - 5.6.16
Warning: Unsupported declare 'strict_types' in /in/aEI2h on line 2 Parse error: syntax error, unexpected 'b' (T_STRING), expecting variable (T_VARIABLE) in /in/aEI2h on line 3
Process exited with code 255.
Output for 5.5.24 - 5.5.30
Warning: Unsupported declare 'strict_types' in /in/aEI2h on line 2 Parse error: syntax error, unexpected 'b' (T_STRING), expecting '&' or variable (T_VARIABLE) in /in/aEI2h on line 3
Process exited with code 255.
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