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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 |
---|---|
845 | * The dynamic portion of the hook name, `$type`, refers to the type |
846 | * of media being sent. |
847 | * |
848 | * @since 3.3.0 |
849 | * |
850 | * @param string $html HTML markup sent to the editor. |
851 | * @param string $src Media source URL. |
852 | * @param string $title Media title. |
853 | */ |
854 | $html = apply_filters( "{$type}_send_to_editor_url", $html, esc_url_raw( $src ), $title ); |
855 | } else { |
856 | $align = ''; |
857 | $alt = esc_attr( wp_unslash( $_POST['alt'] ) ); |
858 | if ( isset( $_POST['align'] ) ) { |
859 | $align = esc_attr( wp_unslash( $_POST['align'] ) ); |
860 | $class = " class='align$align'"; |
861 | } |
862 | if ( ! empty( $src ) ) { |
863 | $html = "<img src='" . esc_url( $src ) . "' alt='$alt'$class />"; |