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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 |
|---|---|
| 3036 | |
| 3037 | /** |
| 3038 | * Filters the rel value that is added to URL matches converted to links. |
| 3039 | * |
| 3040 | * @since 5.3.0 |
| 3041 | * |
| 3042 | * @param string $rel The rel value. |
| 3043 | * @param string $url The matched URL being converted to a link tag. |
| 3044 | */ |
| 3045 | $rel = apply_filters( 'make_clickable_rel', $rel, $url ); |
| 3046 | |
| 3047 | $rel_attr = $rel ? ' rel="' . esc_attr( $rel ) . '"' : ''; |
| 3048 | |
| 3049 | return $rel_attr; |
| 3050 | } |
| 3051 | |
| 3052 | /** |
| 3053 | * Converts plaintext URI to HTML links. |
| 3054 | * |