function mysql_insert_array($table, $data, $password_field = "") {
	foreach ($data as $field=>$value) {
		$fields[] = '`' . $field . '`';
		
		if ($field == $password_field) {
			$values[] = "PASSWORD('" . mysql_real_escape_string($value) . "')";
		} else {
			$values[] = "'" . mysql_real_escape_string($value) . "'";
		}
	}
	$field_list = join(',', $fields);
	$value_list = join(', ', $values);
	
	$query = "INSERT INTO `" . $table . "` (" . $field_list . ") VALUES (" . $value_list . ")";
	
	return $query;
}

http://snippets.dzone.com/posts/show/4350

Inserts the values of an array into a table. Also supports specifying if a specific field needs to be encoded using PASSWORD()
Parameters:
Table: Name of table to insert into
Data: array of $field->$value of new data
Password Field: Which field in the data array needs to be surrounded with PASSWORD() (optional)

PHP: Insert Data Into MySQL Table Using An Array [mysql] [php] [array] [INSERT]

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