PHP: mysql_field_type

Parameters

result: The result resource that is being evaluated. This result comes from a call to mysql_query().
field_offset: The numerical field offset. The field_offset starts at 0. If field_offset does not exist, an error of level E_WARNING is also issued.

Examples

Example 1. mysql_field_type() example

<?php mysql_connect("localhost", "mysql_username", "mysql_password"); mysql_select_db("mysql"); $result = mysql_query("SELECT * FROM func"); $fields = mysql_num_fields($result); $rows = mysql_num_rows($result); $table = mysql_field_table($result, 0); echo "Your '" . $table . "' table has " . $fields . " fields and " . $rows . " record(s)\n"; echo "The table has the following fields:\n"; for ($i=0; $i < $fields; $i++) { $type = mysql_field_type($result, $i); $name = mysql_field_name($result, $i); $len = mysql_field_len($result, $i); $flags = mysql_field_flags($result, $i); echo $type . " " . $name . " " . $len . " " . $flags . "\n"; } mysql_free_result($result); mysql_close(); ?>
The above example will output something similar to:
Your 'func' table has 4 fields and 1 record(s) The table has the following fields: string name 64 not_null primary_key binary int ret 1 not_null string dl 128 not_null string type 9 not_null enum

User Contributed Notes
mysql_field_type

mariob at menta dot net
07-Nov-2003 02:21


For version 4.3.4, types returned are:



STRING, VAR_STRING: string

TINY, SHORT, LONG, LONGLONG, INT24: int

FLOAT, DOUBLE, DECIMAL: real

TIMESTAMP: timestamp

YEAR: year

DATE: date

TIME: time

DATETIME: datetime

TINY_BLOB, MEDIUM_BLOB, LONG_BLOB, BLOB: blob

NULL: null

Any other: unknown

swalif_mesa at hotmail dot com
10-Jul-2003 12:38


Hmm for the previous comment, note that SHOW FIELDS is an alias of SHOW COLUMNS. Very useful if you need to search the mysql-documentation. Here is the link anyway...

http://www.mysql.com/doc/en/SHOW_DATABASE_INFO.html

krang at krang dot org dot uk
10-Mar-2002 08:13


The field type returns what PHP classifies the data found in the field, not how it is stored in the database; use the following example to retrieve the MySQL information about the field....



$USERNAME = '';

$PASSWORD = '';



$DATABASE = '';

$TABLE_NAME = '';



mysql_connect('localhost', $USERNAME, $PASSWORD)

    or die ("Could not connect");



$result = mysql_query("SHOW FIELDS FROM $DATABASE.$TABLE_NAME");



$i = 0;



while ($row = mysql_fetch_array($result)) {

  echo $row['Field'] . ' ' . $row['Type'];

}

ludwigp at bigfoot dot com
17-Aug-2000 09:39


Like mysql_fetch_field, this returns the PHP type, not the MySQL type.

mysql_field_type

Description

Parameters

Return Values

Examples

Notes