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run code in 200+ php & hhvm versions
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<?php $string = "<img /><img />'; $i = -1; $test = preg_replace_callback( '/<img /', function($matches){ $i++; return '<img onclick="lightbox(0)"'; },$string); print_r( $test );
based on VvEar
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.1.6
Parse error: syntax error, unexpected 'lightbox' (T_STRING) in /in/FVLtd on line 7
Process exited with code 255.
Output for hhvm-3.15.4
Fatal error: Uncaught Error: syntax error, unexpected T_STRING in /in/FVLtd:7 Stack trace: #0 {main}
Process exited with code 255.