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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 |
---|---|
6101 |
|
6102 | /** |
6103 | * Filter the pingback source URI. |
6104 | * |
6105 | * @since 3.6.0 |
6106 | * |
6107 | * @param string $pagelinkedfrom URI of the page linked from. |
6108 | * @param string $pagelinkedto URI of the page linked to. |
6109 | */ |
6110 | $pagelinkedfrom = apply_filters( 'pingback_ping_source_uri', $pagelinkedfrom, $pagelinkedto ); |
6111 |
|
6112 | if ( ! $pagelinkedfrom ) |
6113 | return $this->pingback_error( 0, __( 'A valid URL was not provided.' ) ); |
6114 |
|
6115 | // Check if the page linked to is in our site |
6116 | $pos1 = strpos($pagelinkedto, str_replace(array('http://www.','http://','https://www.','https://'), '', get_option('home'))); |
6117 | if ( !$pos1 ) |
6118 | return $this->pingback_error( 0, __( 'Is there no link to us?' ) ); |
6119 |
|