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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 |
---|---|
613 | $align = ''; |
614 | $alt = esc_attr( wp_unslash( $_POST['alt'] ) ); |
615 | if ( isset($_POST['align']) ) { |
616 | $align = esc_attr( wp_unslash( $_POST['align'] ) ); |
617 | $class = " class='align$align'"; |
618 | } |
619 | if ( !empty($src) ) |
620 | $html = "<img src='" . esc_url($src) . "' alt='$alt'$class />"; |
621 |
|
622 | $html = apply_filters( 'image_send_to_editor_url', $html, esc_url_raw( $src ), $alt, $align ); |
623 | } |
624 |
|
625 | return media_send_to_editor($html); |
626 | } |
627 |
|
628 | if ( !empty($_POST) ) { |
629 | $return = media_upload_form_handler(); |
630 |
|
631 | if ( is_string($return) ) |