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sanitize_key › WordPress Function
Since3.0.0
已弃用n/a
› sanitize_key ( $key )
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Sanitizes a string key.
Keys are used as internal identifiers. Lowercase alphanumeric characters, dashes, and underscores are allowed.源码
function sanitize_key( $key ) { $sanitized_key = ''; if ( is_scalar( $key ) ) { $sanitized_key = strtolower( $key ); $sanitized_key = preg_replace( '/[^a-z0-9_\-]/', '', $sanitized_key ); } /** * Filters a sanitized key string. * * @since 3.0.0 * * @param string $sanitized_key Sanitized key. * @param string $key The key prior to sanitization. */ return apply_filters( 'sanitize_key', $sanitized_key, $key ); }