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<?php $subject = " test test2 test3"; $subject = preg_replace("\G(^ |\n )", "\t", $subject); echo $subject;
Output for 4.3.11 - 7.1.0
Warning: preg_replace(): Delimiter must not be alphanumeric or backslash in /in/7oYsT on line 5
Output for 4.3.0 - 4.3.10
Warning: Delimiter must not be alphanumeric or backslash in /in/7oYsT on line 5