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PHP Manual

MySQL Functions
PHP Manual

mysql_field_len

(PHP 4, PHP 5)

mysql_field_len — Returns the length of the specified field

Suggested alternatives

Use of this extension is discouraged. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:

Description

int mysql_field_len ( resource $result , int $field_offset )

mysql_field_len() returns the length of the specified field.

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.

Return Values

The length of the specified field index on success or FALSE on failure.

Examples

Example #1 mysql_field_len() example

<?php
$result = mysql_query("SELECT id,email FROM people WHERE id = '42'");
if (!$result) {
    echo 'Could not run query: ' . mysql_error();
    exit;
}

// Will get the length of the id field as specified in the database
// schema. 
$length = mysql_field_len($result, 0);
echo $length;
?>

Notes

Note:

For backward compatibility, the following deprecated alias may be used: mysql_fieldlen()

See Also

MySQL Functions
PHP Manual


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  2. Installation and Configuration
  3. Language reference
  4. Security
  5. Features
  6. Function reference
  7. PHP and zend engine internal
  8. FAQ: Frequently Asked Questions
  9. Appendices



 

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