Question

I have a sample code html:

$text = '<img src="abc.jpg" alt="abc" /> abc def ghi abc xyz';
echo str_replace('abc', 'has replace', $text);

when i echo result is in tag <img/> has replace ‘abc‘ to ‘has replace‘ => error

How to when run result is:

<img src="abc.jpg" alt="abc" /> has replace def ghi has replace xyz

Answer 1

I have a ideas:

$k=0;
$arr = array();
$regex = '/(<img.*?\/>)/ism';
if(preg_match_all($regex, $text, $tmp)) {
   if(isset($tmp[0])) {             
      for($i = 0;$i < count($tmp[0]); $i++) {
         $arr[0][$k] = $tmp[0][$i];
         $arr[1][$k] = md5($tmp[0][$i]);
         $text = str_replace($arr[0][$k], $arr[1][$k], $text);
         $k++;
      }
   }
}

And then you can replace:

echo str_replace('abc', 'has replace', $text); 

Result now is:
$text = ’74d3ae3af91872413da1db45d88ddd4a abc def ghi abc xyz’; // img has been md5

Final you can:

for($i = 0;$i < $k; $i++) {
    $text   = str_replace($arr[1][$i], $arr[0][$i], $text);
}

Hope you will successful