Trim all characters before a certain substring (php)

Question

I have this string:

"(data I don't care about) (invariable substring) (data I care about)"

How do I trim all the data I don't care about, knowing the invariable substring?

Possible duplicate of [PHP remove all characters before specific string](https://stackoverflow.com/questions/7802821/php-remove-all-characters-before-specific-string) — Vladislav, Nov 22 '17 at 14:09

score 2 · Answer 1 · answered Mar 01 '11 at 19:10

2

This should suffice:

substr($string, (int)strpos("invariablestring", $string));

But will leave the invariablestring untouched. If you want to remove that string, just add it's length to the value strpos() returned.

answered Mar 01 '11 at 19:10

smottt

score 1 · Answer 2 · answered Aug 26 '13 at 07:20

1

Simplest I've found is:

list(, $data_i_care_about) = explode('(invariable substring)', $all_the_data, 2)

answered Aug 26 '13 at 07:20

Francis

score 1 · Answer 3 · answered Mar 01 '11 at 19:11

1

You could get the offset and only take the substring from that offset on:

if (($pos = strpos($str, $substr)) !== false) {
    $str = substr($str, $pos);
}

answered Mar 01 '11 at 19:11

Gumbo

3 Answers3