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run code in 150+ php & hhvm versions
Bugs & Features
<?php /** * Sum byte values from position x in $str **/ function sum( $str, $x ) { $sum = 0; for ( $max = strlen( $str ); $x < $max; ++$x ) { $sum += ord( $str[ $x ] ); } return $sum; } $str = 'Hello, Dolly'; echo sum($str, strpos( $str, 'D')); //
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.6.21, hhvm-3.12.0, 7.0.0 - 7.1.0
516
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/jfltO on line 18
Process exited with code 255.