I have a file that i'm parsing And I'm trying to replace $mail["email_from"] = "[email protected]"; with $mail["email_from"] = request("email");,(meaning that I want to replace all the lines that has $mail["email_from"] at the begining an ; at the end) and here's my preg_replace:
$email = "$mail[\"email_from\"] = request(\"email\")";
$newcontent = preg_replace("/\$mail[\"email_from\"](.+);/",$email,$content);
What's the error in my code? and how to fix it? Much appreciated
After using good quotes and escaping all chars you need, this works:
$email = '$mail["email_from"] = "[email protected]";';
$replacement = '$mail["email_from"] = request("email");';
$newContent = preg_replace('/\\$mail\\[\\"email_from\\"\\](.+);/i', $replacement, $email);
echo $newContent; //$mail["email_from"] = request("email");
$email = "$mail[\"email_from\"] = request(\"email\")";
^---double-quoted string
^^^^^---array reference
You probably need
$email = "\$mail[\"email_from\"] = request(\"email\")";
^--escape the $
Use ^ and $ to specify beginning and end of line. Special characters like $, [, and ] need to be escaped.
<?php
$content = '$mail["email_from"] = "[email protected]";';
$email = '$mail["email_from"] = request("email");';
$newcontent = preg_replace('/^\$mail\["email_from"\] =.+;$/',$email,$content);
echo $newcontent . "\n";
outputs:
$mail["email_from"] = request("email");
