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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 |
---|---|
563 | $align = ''; |
564 | $alt = esc_attr( stripslashes( $_POST['alt'] ) ); |
565 | if ( isset($_POST['align']) ) { |
566 | $align = esc_attr( stripslashes( $_POST['align'] ) ); |
567 | $class = " class='align$align'"; |
568 | } |
569 | if ( !empty($src) ) |
570 | $html = "<img src='" . esc_url($src) . "' alt='$alt'$class />"; |
571 |
|
572 | $html = apply_filters( 'image_send_to_editor_url', $html, esc_url_raw( $src ), $alt, $align ); |
573 | } |
574 |
|
575 | return media_send_to_editor($html); |
576 | } |
577 |
|
578 | if ( !empty($_POST) ) { |
579 | $return = media_upload_form_handler(); |
580 |
|
581 | if ( is_string($return) ) |