Need help about get_the_content() function
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I want to add a code in my theme’s header.php file which generates value for og:image(facebook meta tag) . here is the code
<meta property ="og:image" content ="<?php $youtubeid = get_the_content(); $url = parse_url($youtubeid); parse_str($url['query']); echo 'http://img.youtube.com/vi/'.$v.'/1.jpg';?>" />
The above code is working fine in other theme files and I am using this method to generate thumbnails for videos .but it is not working in header.php
but by using this code the fucntion get_the_content() does not assign any value to $youtubeid when used in header.php file (at all other places it is working good) .
However the following code works perfect .I used a custom field and used get_post_meta() function and it is working fine.<meta property ="og:image" content ="<?php $youtubeid = get_post_meta($post->ID, "video", true); $url = parse_url($youtubeid); parse_str($url['query']); echo 'http://img.youtube.com/vi/'.$v.'/1.jpg';?>" />
can somebody guide me how to solve this issue. I want the first code with get_the_content() function to work .
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