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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 http://www.mysql.com/.

Documentation for MySQL can be found at http://www.mysql.com/documentation/.

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

Example 1. MySQL extension overview example


<?php
    $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";
    
    mysql_close($link);
?>

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
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