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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 |
|---|---|
| 3040 | $safe_tag = strtolower( preg_replace('/[^a-zA-Z0-9_:]/', '', $tag_name) ); |
| 3041 | /** |
| 3042 | * Filter a string cleaned and escaped for output as an HTML tag. |
| 3043 | * |
| 3044 | * @since 2.8.0 |
| 3045 | * |
| 3046 | * @param string $safe_tag The tag name after it has been escaped. |
| 3047 | * @param string $tag_name The text before it was escaped. |
| 3048 | */ |
| 3049 | return apply_filters( 'tag_escape', $safe_tag, $tag_name ); |
| 3050 | } |
| 3051 | |
| 3052 | /** |
| 3053 | * Escapes text for SQL LIKE special characters % and _. |
| 3054 | * |
| 3055 | * @since 2.5.0 |
| 3056 | * |
| 3057 | * @param string $text The text to be escaped. |
| 3058 | * @return string text, safe for inclusion in LIKE query. |