Auto Extract the First Image from the Post Content

Posted by Prem Tiwari | Updated on September 18, 2020

This code will automatically extract the first image associated with a post and allow you to display/use it by calling the getImage function.

// AUTOMATICALLY EXTRACT THE FIRST IMAGE FROM THE POST

function getImage($num) {

global $more;

$more = 1;

$link = get_permalink();

$content = get_the_content();

$count = substr_count($content, '<img');

$start = 0;

for($i=1;$i<=$count;$i++) {

$imgBeg = strpos($content, '<img', $start);

$post = substr($content, $imgBeg);

$imgEnd = strpos($post, '>');

$postOutput = substr($post, 0, $imgEnd+1);

$postOutput = preg_replace('/width="([0-9]*)" height="([0-9]*)"/', '',$postOutput);;

$image[$i] = $postOutput;

$start=$imgEnd+1;

}

if(stristr($image[$num],'<img')) {

echo '<a href="'.$link.'">'.$image[$num]."</a>";

}

$more = 0;

}

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Auto Extract the First Image from the Post Content

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