php str_replace returns zero value

Asked Jun 11 '22 at 08:08

Active Jun 11 '22 at 08:08

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I want to add some lines to many css files in different folders. everything is ok. but str_replace function returns zero value when write is with file_put_contents. This is my code:

$from = '@media (max-width: 767px) {';
$to = '.st'.$folder.' {}'. PHP_EOL .'.sb'.$folder.' {}'. PHP_EOL .'@media (max-width: 767px) {';
$item_content = str_replace($from, $to, $item_content);

Any idea? Thank you

asked Jun 11 '22 at 08:08

Jahan Web

at least, `$from = '@media $max-width: 767px$ {';` – splash58 Jun 11 '22 at 08:16
If nothing was written to the file, how were you sure everything is ok? – shingo Jun 11 '22 at 08:45
We don't know the initial value of `$item_content`, if it's empty in the first place, the result will be an empty string again ;) – Honk der Hase Jun 11 '22 at 13:01

php str_replace returns zero value

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