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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 |
---|---|
2047 | if ( $title ) |
2048 | $html = '<a href="' . esc_url( $src ) . '">' . $title . '</a>'; |
2049 |
|
2050 | // Figure out what filter to run: |
2051 | $type = 'file'; |
2052 | if ( ( $ext = preg_replace( '/^.+?\.([^.]+)$/', '$1', $src ) ) && ( $ext_type = wp_ext2type( $ext ) ) |
2053 | && ( 'audio' == $ext_type || 'video' == $ext_type ) ) |
2054 | $type = $ext_type; |
2055 |
|
2056 | $html = apply_filters( $type . '_send_to_editor_url', $html, $src, $title ); |
2057 |
|
2058 | wp_send_json_success( $html ); |
2059 | } |
2060 |
|
2061 | /** |
2062 | * Heartbeat API (experimental) |
2063 | * |
2064 | * Runs when the user is logged in. |
2065 | */ |