3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $var = 'ABCDEFGH:/MNRPQR/'; echo "Original: $var<hr />\n"; /* These two examples replace all of $var with 'bob'. */ echo substr_replace($var, 'bob', 0) . "<br />\n"; echo substr_replace($var, 'bob', 0, strlen($var)) . "<br />\n"; /* Insert 'bob' right at the beginning of $var. */ echo substr_replace($var, 'bob', 0, 0) . "<br />\n"; /* These next two replace 'MNRPQR' in $var with 'bob'. */ echo substr_replace($var, 'bob', 10, -1) . "<br />\n"; echo substr_replace($var, 'bob', -7, -1) . "<br />\n"; /* Delete 'MNRPQR' from $var. */ echo substr_replace($var, '*', 10, -1) . "<br />\n";
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
Original: ABCDEFGH:/MNRPQR/<hr /> bob<br /> bob<br /> bobABCDEFGH:/MNRPQR/<br /> ABCDEFGH:/bob/<br /> ABCDEFGH:/bob/<br /> ABCDEFGH:/*/<br />