I have a html string code which contain some "img" tags. I want to search the string and change each "<img " occurrence with something like "<img onclick=lightbox(XXXX)", so the first one should become "<img onclick=lightbox(0)" then the second occurrence should become "<img onclick=lightbox(1)" and then third one should become "<img onclick=lightbox(2)" and etc, How can I achieve this in PHP?
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3 Answers
parse the html as a DOMObject and replace
function replace_img($html) {
$doc = new DOMDocument();
$doc->loadHTML($html);
$tags = $doc->getElementsByTagName('img');
$i=0;
foreach ($tags as $tag) {
$tag->setAttribute('onclick', "lightbox($i)");
$i++;
}
return $doc->saveHTML();
}
Comments
A regex-based solution which is a little more elegant and should be a lot faster:
<?php
$string = "<img /><img />";
$i = 0;
$newString = preg_replace_callback( '/<img /', function() use (&$i){
return '<img onclick="lightbox(' . ($i++) . ');" ';
},$string);
echo $newString;
Comments
Here. Try this
<?php
$str = "this is xxxx is not equal xxxx, So what xxxx";
$t = explode('xxxx',$str);
$i=0;
$imStr=[];
foreach($t as $s){
$s=$s.$i;
$imStr[$i]=$s;
$i=$i+1;
}
$str = implode($imStr);
echo $str;
?>
This can be improved a lot..
Comments
