Cut from string and put on other position on same string

Question

I have a string with more than 1000+ symbols, and I need to find substring, cut it from curret position and put into another pisition on same string.

P.S. Sorry for my bad english.

//I have
$string = "< p>< img class='classes' src='https://example.com/img/img.jpg' atl='img'>< /p>";

// I need
$string = "< p>< img class='classes' data-src='https://example.com/img/img.jpg' src=' ' atl='img'>< /p>";

I need find in $string src, cut the link and place it to same but in data-src

Taking @sorayadragon suggestion you could do `$string = str_replace("src='", "data-src='", $string);` — Claudio, Oct 03 '19 at 16:06
@Claudio It might be better idea to replace `" src='"` with `" data-src='"`. Otherwise it might turn `data-src='` into `data-data-src='` if there already is data-src attribute. — Michal Hynčica, Oct 03 '19 at 16:17
@Michal Hynčica and Claudio thank you very much, i thik i will be use this solution. — Анар Лятифов, Oct 03 '19 at 16:46

score 0 · Answer 1 · answered Oct 03 '19 at 16:25

0

You can use regex by using the preg_replace_callback function like:

$string = "<p><img class='classes' src='https://example.com/img/img.jpg' atl='img' /></p>";

preg_replace_callback('#\s+src(\s+)?=(\s+)?(\'|")([^\'"]+)(\'|")#', function($m){
    return ' data-src="'.$m[4].'" src=""';
}, $string);

echo $string;

answered Oct 03 '19 at 16:25

Kubwimana Adrien

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Don't use regex to parse html - https://stackoverflow.com/a/1732454/2755347 – Bradley4 Oct 03 '19 at 16:37
@Bradley4 It doesn't hurt for something basic like this. Regex have been used to parse shortcodes and bbcode for years. – Kubwimana Adrien Oct 03 '19 at 16:53

Cut from string and put on other position on same string

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