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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 |
---|---|
2141 | /** |
2142 | * Filters a sanitized username string. |
2143 | * |
2144 | * @since 2.0.1 |
2145 | * |
2146 | * @param string $username Sanitized username. |
2147 | * @param string $raw_username The username prior to sanitization. |
2148 | * @param bool $strict Whether to limit the sanitization to specific characters. |
2149 | */ |
2150 | return apply_filters( 'sanitize_user', $username, $raw_username, $strict ); |
2151 | } |
2152 |
|
2153 | /** |
2154 | * Sanitizes a string key. |
2155 | * |
2156 | * Keys are used as internal identifiers. Lowercase alphanumeric characters, |
2157 | * dashes, and underscores are allowed. |
2158 | * |
2159 | * @since 3.0.0 |