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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 |
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2136 |
|
2137 | /** |
2138 | * Filters a sanitized key string. |
2139 | * |
2140 | * @since 3.0.0 |
2141 | * |
2142 | * @param string $key Sanitized key. |
2143 | * @param string $raw_key The key prior to sanitization. |
2144 | */ |
2145 | return apply_filters( 'sanitize_key', $key, $raw_key ); |
2146 | } |
2147 |
|
2148 | /** |
2149 | * Sanitizes a title, or returns a fallback title. |
2150 | * |
2151 | * Specifically, HTML and PHP tags are stripped. Further actions can be added |
2152 | * via the plugin API. If $title is empty and $fallback_title is set, the latter |
2153 | * will be used. |
2154 | * |