This "preg_replace" not work for me in php 7.4

Question

$regex = array(
                "`^([\t\s]+)`ism"=>'',
                "`^\/\*(.+?)\*\/`ism"=>"",
                "`([\n\A;]+)\/\*(.+?)\*\/`ism"=>"$1",
                "`([\n\A;\s]+)//(.+?)[\n\r]`ism"=>"$1\n",
                "`(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+`ism"=>"\n"
            );
$file_content = preg_replace(array_keys($regex), $regex, $file_content);

I received this warning:

preg_replace(): Compilation failed: escape sequence is invalid in character class at offset 4

Konstantin Bogomolov · Accepted Answer · 2020-11-29 02:54:22Z

0

The reason is \A inside square brackets.

Here is a good answer about the reason in general.

PHP PCRE engine migrates to PCRE2

PCRE2 is more strict in the pattern validations, so after the upgrade, some of your existing patterns could not compile anymore.

answered Nov 29, 2020 at 2:54

Konstantin Bogomolov

1,3661 gold badge12 silver badges17 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Meir Levi Over a year ago

OK, So what do I need put insted the - "\A" ?

Konstantin Bogomolov Over a year ago

I don't know what was your goal using \A in patterns. Looks like you can just remove it. Or move it outside of square brackets, like this ...(\A|[\n;]+...

Collectives™ on Stack Overflow

This "preg_replace" not work for me in php 7.4

1 Answer 1

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related