3v4l.org

run code in 300+ PHP versions simultaneously
<?php function num( $a, $b ) { if ( 0 == $b ) { return $a; } if ( $a > $b ) { $a = $a - $b; } else { $b = $b - $a; } return num( $a, $b ); } echo num( 66, 6 ) . '<br />;
Output for 5.4.13
Parse error: syntax error, unexpected ''<br />;' (T_ENCAPSED_AND_WHITESPACE) in /in/5SdeM on line 21
Process exited with code 255.
Output for 5.4.0 - 5.4.12
Parse error: syntax error, unexpected ''<br />;' (T_ENCAPSED_AND_WHITESPACE) in rlqrs on line 21
Process exited with code 255.
Output for 5.3.23
Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE in /in/5SdeM on line 21
Process exited with code 255.
Output for 5.3.0 - 5.3.22
Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE in rlqrs on line 21
Process exited with code 255.
Output for 5.2.3 - 5.2.17
Warning: Unexpected character in input: ''' (ASCII=39) state=1 in rlqrs on line 21 Parse error: syntax error, unexpected '<' in rlqrs on line 21
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.2
Parse error: syntax error, unexpected $end in rlqrs on line 21
Process exited with code 255.
Output for 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 rlqrs on line 21
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in rlqrs on line 21
Process exited with code 255.
Output for 4.3.0
Parse error: parse error, unexpected $ in /in/rlqrs on line 21
Process exited with code 255.

preferences:
207.79 ms | 1394 KiB | 98 Q