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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 |
|---|---|
| 516 | $src = "http://$src"; |
| 517 | $alt = esc_attr($_POST['insertonly']['alt']); |
| 518 | if ( isset($_POST['insertonly']['align']) ) { |
| 519 | $align = esc_attr($_POST['insertonly']['align']); |
| 520 | $class = " class='align$align'"; |
| 521 | } |
| 522 | if ( !empty($src) ) |
| 523 | $html = "<img src='" . esc_url($src) . "' alt='$alt'$class />"; |
| 524 | |
| 525 | $html = apply_filters('image_send_to_editor_url', $html, esc_url_raw($src), $alt, $align); |
| 526 | return media_send_to_editor($html); |
| 527 | } |
| 528 | |
| 529 | if ( !empty($_POST) ) { |
| 530 | $return = media_upload_form_handler(); |
| 531 | |
| 532 | if ( is_string($return) ) |
| 533 | return $return; |
| 534 | if ( is_array($return) ) |