foreach中的Preg_replace无法正常工作

Question

I have a problem with a PHP Code. This loop only executes the last regular expression in the file and when I change the sequence of expressions in the file and another expression becomes last, only this new last expression is executed.

foreach(file('general.txt') as $line) {
    $text = preg_replace("/" . $line . "/", "", $text);
}

The file general.txt contains lines of regular expressions, everything tested. But in this loop, it doesn't work anymore.

Do you maybe know why this is like this? I have tried a lot, but didn't figure out why...

Thank you

Simon

Answer 1

you need to trim your lines as follows:

foreach(file('general.txt') as $line) {
    $text = preg_replace("/" . trim($line) . "/", "", $text);
}