LV. MySQL Functions

These functions allow you to access MySQL database servers. In order to have these functions available, you must compile php with MySQL support by using the --with-mysql option. If you use this option without specifying the path to MySQL, php will use the built-in MySQL client libraries. Users who run other applications that use MySQL (for example, running php3 and php4 as concurrent apache modules, or auth-mysql) should always specify the path to MySQL: --with-mysql=/path/to/mysql. This will force php to use the client libraries installed by MySQL, avoiding any conflicts.

More information about MySQL can be found at

Documentation for MySQL can be found at

This simple example shows how to connect, execute a query, print resulting rows and disconnect from MySQL Database.

Example 1. MySQL extension overview example

    $link = mysql_connect("mysql_host", "mysql_login", "mysql_password")
        or die ("Could not connect");
    print ("Connected successfully");
    mysql_select_db ("my_database")
        or die ("Could not select database");
    $query = "SELECT * FROM my_table";
    $result = mysql_query ($query)
        or die ("Query failed");

	// printing HTML result

	print "<table>\n";
	while ($line = mysql_fetch_array($result)) {
	    print "\t<tr>\n";
	    while(list($col_name, $col_value) = each($line)) {
	        print "\t\t<td>$col_value</td>\n";
	    print "\t</tr>\n";
	print "</table>\n";

Table of Contents
mysql_affected_rows -- Get number of affected rows in previous MySQL operation
mysql_change_user --  Change logged in user of the active connection
mysql_close -- Close MySQL connection
mysql_connect -- Open a connection to a MySQL Server
mysql_create_db -- Create a MySQL database
mysql_data_seek -- Move internal result pointer
mysql_db_name -- Get result data
mysql_db_query -- Send a MySQL query
mysql_drop_db -- Drop (delete) a MySQL database
mysql_errno --  Returns the numerical value of the error message from previous MySQL operation
mysql_error --  Returns the text of the error message from previous MySQL operation
mysql_escape_string --  Escapes a string for use in a mysql_query.
mysql_fetch_array --  Fetch a result row as an associative array, a numeric array, or both.
mysql_fetch_assoc --  Fetch a result row as an associative array
mysql_fetch_field --  Get column information from a result and return as an object
mysql_fetch_lengths --  Get the length of each output in a result
mysql_fetch_object -- Fetch a result row as an object
mysql_fetch_row -- Get a result row as an enumerated array
mysql_field_flags --  Get the flags associated with the specified field in a result
mysql_field_name --  Get the name of the specified field in a result
mysql_field_len --  Returns the length of the specified field
mysql_field_seek --  Set result pointer to a specified field offset
mysql_field_table --  Get name of the table the specified field is in
mysql_field_type --  Get the type of the specified field in a result
mysql_free_result -- Free result memory
mysql_insert_id --  Get the id generated from the previous INSERT operation
mysql_list_dbs --  List databases available on a MySQL server
mysql_list_fields -- List MySQL result fields
mysql_list_tables -- List tables in a MySQL database
mysql_num_fields -- Get number of fields in result
mysql_num_rows -- Get number of rows in result
mysql_pconnect --  Open a persistent connection to a MySQL Server
mysql_query -- Send a MySQL query
mysql_unbuffered_query --  Send an SQL query to MySQL, without fetching and buffering the result rows
mysql_result -- Get result data
mysql_select_db -- Select a MySQL database
mysql_tablename -- Get table name of field
mysql_get_client_info -- Get MySQL client info
mysql_get_host_info -- Get MySQL host info
mysql_get_proto_info -- Get MySQL protocol info
mysql_get_server_info -- Get MySQL server info