176 	 * @param string $in name to test
180 	public static function isValidName( $in )  argument
182 		return preg_match( '/^[_a-z][_a-z0-9]+$/i', $in );
1333 		$in    = $record;
1336 		foreach ( $in as $column => $value )
1343 				unset( $in[$column] );
1347 		foreach ( $in as $column => $value )
2743 	 * @param string $in string containing filter definition
2747 	protected function parseFilterCode( $in )  argument
2750 		$in       = trim( $in );
2755 		while ( $in !== '' )
2758 			if ( preg_match( '/^(\w+)\s+(\w+)(.*)$/i', $in, $matches ) )
2800 				$in    = ltrim( substr( $tail, $pos ) );
2807 			$prevMode = $in[0];
2808 			$in       = substr( $in, 1 );
3171 	 * @param string $in haystack containing quoted string
3176 	public static function parseString( $in, &$first )  argument
3185 			$end = strpos( $in, $in[$first], $pos + 1 );
3192 				if ( $in[$idx] == '\\' )
3202 				$string = substr( $in, $first + 1, $end - $first - 1 );
3216 	public static function parseAssignment( $in, &$first )  argument
3223 		$pos += strspn( $in, " \t", $pos );
3228 		$end  = $pos + strcspn( $in, " \t=", $pos );
3229 		$name = substr( $in, $pos, $end - $pos );
3241 		$pos = $end + strspn( $in, " \t", $end );
3243 		if ( $in[$pos] !== '=' )
3253 			$pos += strspn( $in, " \t", $pos + 1 ) + 1;
3256 			if ( $in[$pos] === '"' )
3260 				$temp = self::parseString( $in, $end );
3270 				$end  += strcspn( $in, " \t", $end );
3272 				$value = substr( $in, $pos, $end - $pos );
3285 	public static function stripTags( $in, $tags = null )  argument
3298 			$tag = strpos( $in, '<', $pos );
3300 				return $in;
3302 			if ( $in[$tag+1] == '?' )
3306 				$end = strpos( $in, '?>', $tag + 2 );
3308 					$in = substr_replace( $in, '', $tag, $end - $tag + 2 );
3310 					$in = substr_replace( $in, '', $tag );
3320 				$name = strtok( substr( $in, $tag + 1, 20 ), ' >' );
3328 					if ( preg_match( "#.+?</\s*$name\s*>#i", $in, $m, null, $tag ) )
3329 						$in = substr_replace( $in, '', $tag, strlen( $m[0] ) );
3331 						$in = substr_replace( $in, '', $tag );
4008 	 * @param mixed $in value to parse
4014 	protected static function asBool( $in, $nullIfUnparseable = false )  argument
4017 		if ( is_numeric( $in ) )
4018 			return ( $in != 0 );
4020 		if ( is_string( $in ) )
4023 			if ( preg_match( '/^(n|no|f|false|off)$/i', trim( $in ) ) )
4026 			if ( preg_match( '/^(y|yes|t|true|on)$/i', trim( $in ) ) )
4031 		if ( ctype_digit( trim( $in ) ) )
4032 			return ( intval( $in ) != 0 );
4034 		if ( ( $in === true ) || ( $in === false ) )
4035 			return $in;
4037 		return $nullIfUnparseable ? null : (bool) $in;
4718 	 * @param string $in representation of Date/Time in SQL format
4723 	protected static function parseDBDateTime( $in, $skipTime = false )  argument
4726 		list( $date, $time ) = preg_split( '/t|(\s+)/i', trim( $in ) );
4748 	protected static function parseInternalDate( $in )  argument
4758 		$in = preg_replace( '/\s+/', '', $in );
4761 			if ( preg_match( $pattern, $in, $matches ) )
4787 	protected static function parseInternalTime( $in )  argument
4794 		$in = preg_replace( '/\s+/', '', $in );
4797 			if ( preg_match( $pattern, $in, $matches ) )
4820 	protected function parseACLRule( $in, $mayThrow = false, $useLabels = false )  argument
4825 		$rules = preg_split( '/\s*;\s*/', trim( $in ) );
4930 	 * @param string $in string to parse for markup sequences to be replaced
4934 	public function replaceMarkup( $in, $varspace = array() )  argument
4937 		if ( strpos( $in, '%{' ) !== false )
4942 			$in = preg_replace_callback( '/%{([^}]+)}/', array( &$this,
4943 										 '__replaceMarkupCB' ), $in );
4947 		return $in;
5314 				$in  = array();
5320 							$in[$key] = $list[$idx];
5323 				if ( !is_array( $in ) || ( $in['error'] == UPLOAD_ERR_NO_FILE ) )
5331 				if ( $in['error'] !== UPLOAD_ERR_OK )
5332 					return sprintf( $this->getLang( 'filebadupload' ), $in['error'] );
5334 				if ( $in['size'] === 0 )
5340 					if ( !preg_match( $def['options']['accept'], $in['type'] ) )
5347 					list( $major, $minor ) = explode( '/', $in['type'] );
5355 				$data = file_get_contents( $in['tmp_name'] );
5356 				if ( strlen( $data ) != $in['size'] )
5361 								'name' => $in['name'],
5362 								'mime' => $in['type'],
5997 	 * @param mixed $in value returned from DB