3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = "[vc_tab [vc_tab [vc_tab [vc_tab [vc_tab [vc_tab"; $active = 3; $needle = "[vc_tab"; $replace = '[vc_tab active="true"'; if( substr_count( $string, $needle) < $active) { throw new Exception("There aren't enough needles in the string to do this replacement"); } $count = 0; $index = 0; while( $count++ < $active) { $index = strpos( $string, $needle, $index) + strlen( $needle); } $result = substr( $string, $index - strlen( $needle)) . $replace . substr( $string, $index); echo "Index: ", $index, " ", $result;
Output for 5.0.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Index: 23 [vc_tab [vc_tab [vc_tab [vc_tab[vc_tab active="true" [vc_tab [vc_tab [vc_tab
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_NEW in /in/6LBQs on line 9
Process exited with code 255.
Output for 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_NEW in /in/6LBQs on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/6LBQs on line 9
Process exited with code 255.
Output for 4.3.0
Parse error: parse error, unexpected T_NEW in /in/OdbXj on line 9
Process exited with code 255.