在每一行中使用strstr（）

I want to use strstr(), to delete everything before a word. I already have this here:

$file = file_get_contents('text.txt');
$deleted = strstr($file, 'word');
echo $deleted;

But this, is only for one line! I need, to delete everything before a word on every single line in my txt file.

I hope someone can help me :)

This should work for you:

(Her I just get all lines into a array with file(). Then I go through each element with array_map() and remove everything before "word" with strstr())

$file = file('text.txt');
$deleted = array_map(function($line){
    return strstr($line, "word");
}, $file);

echo implode("<br />", $deleted);

Example file:

test word test2
test word test

Output:

word test2 
word test