3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "lgx sinx cosx textxtanxsinx"; $patternReplace = preg_replace("/(lg|sin|cos)x/", "$1(x)", $string); print $patternReplace;
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
lg(x) sin(x) cos(x) textxtanxsin(x)
preferences:
152.22 ms | 408 KiB | 5 Q