php - regular expression for commenting out all print statements in a file if followed by a particular string -

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i have file looks similar this:

<?php     print "hello world" . "<br/>";     print "foobar" . "<br/>";     ...     // process parameter     if ($var) {         print $var . "<br/>";     }     ...     print "foo" . "<br/>";     ...     print "bar" . "<br/>";     ... >?

i need regular expression comments out print statements, if said statements appear after process parameter comment.

i'm using perl process file above, way.

i've come following regex it's not working:

~(?s)(// process parameter.*?)print(.*?\?\>)~$1//print$3~gi

do need use regex conditional? appreciate help.

thank you.

thank suggestions. did figure out, though.

~(?s)(?<=// process parameter.*?)(print.*?)~//$1~gi

i'm using look-behind assertion s option treat string single line. matches print if followed contents of look-behind assertion.


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