Wordpress: Automatically change URLs in the_content section - php

Question

The solution from here isn't solving our problem.
I have already a solution to change all links in a field form in our theme. I am using different arrays for every network like $example_network_1 $example_network_2 with a PHP foreach for each affiliate network.
Now I need a solution to use this same arrays for the content of a WordPress post.
This solution is working for one network, but it caused a 404e Error for YouTube videos. We put the URL from a YouTube video and WordPress generates automatically an embedded video. With the following code we get a 404 error iframe or something like this.
We need a solution for more than one network.
I am very thankful for every help!
$example_network_1 = array(
array('shop'=>'shop1.com','id'=>'11111'),
array('shop'=>'shop2.co.uk','id'=>'11112'),
);
$example_network_2 = array(
array('shop'=>'shop-x1.com','id'=>'11413'),
array('shop'=>'shop-x2.net','id'=>'11212'),
);
add_filter( 'the_content', 'wpso_change_urls' ) ;
function wpso_found_urls( $matches ) {
global $example_network_1,$example_network_2;
foreach( $example_network_1 as $rule ) {
if (strpos($matches[0], $rule['shop']) !== false) {
$raw_url = trim( $matches[0], '"' ) ;
return '"https://www.network-x.com/click/'. $rule['id'].'lorem_lorem='.rawurlencode($raw_url ) . '"';
}
/*
foreach( $example_network_2 as $rule ) {
if (strpos($matches[0], $rule['shop']) !== false) {
$raw_url = trim( $matches[0], '"' ) ;
return '"https://www.network-y.com/click/'. $rule['id'].'lorem='.rawurlencode($raw_url ) . '"';
}
*/
}
}
function wpso_change_urls( $content ) {
global $example_network_1,example_network_2;
return preg_replace_callback( '/"+(http|https)(\:\/\/\S*'. $example_network_1 ['shop'] .'\S*")/', 'wpso_found_urls', $content ) ;
// return preg_replace_callback( '/"+(http|https)(\:\/\/\S*'. $example_network_2 ['shop'] .'\S*")/', 'wpso_found_urls', $content ) ;
}

Answer 1

autoembed is hooked at the_content with priority 8 on wp-includes/class-wp-embed.php:39
Try to lower the priority of the the_content filter so that the URL replacement happens before the embed, something like this:
add_filter( 'the_content', function ( $content ) {
/*
* Here, we define the replacements for each site in the network.
* '1' = main blog
* '2' = site 2 in the network, and so on
*
* To add more sites, just add the key number '3', etc
*/
$network_replacements = [
'1' => [
[ 'shop' => 'shop1.com', 'id' => '11111' ],
[ 'shop' => 'shop2.co.uk', 'id' => '11112' ],
],
'2' => [
[ 'shop' => 'shop-x1.com', 'id' => '11413' ],
[ 'shop' => 'shop-x2.net', 'id' => '11212' ],
]
];
// Early bail: Current blog ID does not have replacements defined
if ( ! array_key_exists( get_current_blog_id(), $network_replacements ) ) {
return $content;
}
$replacements = $network_replacements[ get_current_blog_id() ];
return preg_replace_callback( '/"+(http|https)(\:\/\/\S*' . $replacements['shop'] . '\S*")/', function( $matches ) use ( $replacements ) {
foreach ( $replacements as $rule ) {
if ( strpos( $matches[0], $rule['shop'] ) !== false ) {
$raw_url = trim( $matches[0], '"' );
return '"https://www.network-x.com/click/' . $rule['id'] . 'lorem_lorem=' . rawurlencode( $raw_url ) . '"';
}
}
}, $content );
}, 1, 1 );
This is not a copy and paste solution, but should get you going. You might need to tweak your "preg_replace_callback" code, but you said it was working so I just left it is it was.

Answer 2

If preventing the wp auto-embed works, then just add this line to your theme functions.php
remove_filter( 'the_content', array( $GLOBALS['wp_embed'], 'autoembed' ), 8 );

Answer 3

I wrote solution without test. Your code is hard to test without your site but I think that problem is with regex. Callback is hard to debugging. My version below.
First step, change your structure. I suspect that domains are unique. One dimensional array is more useful.
$domains = array(
'shop1.com'=>'11111',
'shop2.co.uk'=>'11112',
'shop-x1.com'=>'11413',
'shop-x2.net'=>'11212',
);
Next:
$dangerouschars = array(
'.'=>'\.',
);
function wpso_change_urls( $content ) {
global $domains,$dangerouschars;
foreach($domains as $domain=>$id){
$escapedDomain = str_replace(array_keys($dangerouschars),array_values($dangerouschars), $domain);
if (preg_match_all('/=\s*"(\s*https?:\/\/(www\.)?'.$escapedDomain.'[^"]+)\s*"\s+/mi', $content, $matches)){
// $matches[0] - ="https://example.com"
// $matches[1] - https://example.com
for($i = 0; $i<count($matches[0]); $i++){
$matchedUrl = $matches[1][$i];
$url = rawurlencode($matchedUrl);
//is very important to replace with ="..."
$content = str_replace($matches[0][$i], "=\"https://www.network-x.com/click/{$id}lorem_lorem={$url}\" ", $content);
}
}
}
return $content;
}
Example script