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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
5315 | $pagelinkedfrom = $args[0]; |
5316 | $pagelinkedto = $args[1]; |
5317 |
|
5318 | $title = ''; |
5319 |
|
5320 | $pagelinkedfrom = str_replace('&', '&', $pagelinkedfrom); |
5321 | $pagelinkedto = str_replace('&', '&', $pagelinkedto); |
5322 | $pagelinkedto = str_replace('&', '&', $pagelinkedto); |
5323 |
|
5324 | $pagelinkedfrom = apply_filters( 'pingback_ping_source_uri', $pagelinkedfrom, $pagelinkedto ); |
5325 | if ( ! $pagelinkedfrom ) |
5326 | return $this->pingback_error( 0, __( 'A valid URL was not provided.' ) ); |
5327 |
|
5328 | // Check if the page linked to is in our site |
5329 | $pos1 = strpos($pagelinkedto, str_replace(array('http://www.','http://','https://www.','https://'), '', get_option('home'))); |
5330 | if ( !$pos1 ) |
5331 | return $this->pingback_error( 0, __( 'Is there no link to us?' ) ); |
5332 |
|
5333 | // let's find which post is linked to |