mysql_data_seek(3) [php man page]

MYSQL_DATA_SEEK(3)							 1							MYSQL_DATA_SEEK(3)

mysql_data_seek - Move internal result pointer

SYNOPSIS

       Warning

	      This  extension  is deprecated as of PHP 5.5.0, and will be removed in the future. 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:

		     omysqli_data_seek(3)

		     o PDO::FETCH_ORI_ABS

       bool mysql_data_seek (resource  $result, int  $row_number)

DESCRIPTION

       mysql_data_seek(3) moves the internal row pointer of the MySQL result associated with the specified result identifier to point to the spec-
       ified row number. The next call to a MySQL fetch function, such as mysql_fetch_assoc(3), would return that row.

       $row_number starts at 0. The $row_number should be a value in the range from 0 to mysql_num_rows(3) - 1. However if the result set is empty
       (mysql_num_rows(3) == 0), a seek to 0 will fail with a E_WARNING and mysql_data_seek(3) will return FALSE.

	      o $
		result -The result resource that is being evaluated. This result comes from a call to mysql_query(3).

	      o $row_number
		- The desired row number of the new result pointer.

	Returns TRUE on success or FALSE on failure.

       Example #1

	      mysql_data_seek(3) example

	      <?php
	      $link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
	      if (!$link) {
		  die('Could not connect: ' . mysql_error());
	      }
	      $db_selected = mysql_select_db('sample_db');
	      if (!$db_selected) {
		  die('Could not select database: ' . mysql_error());
	      }
	      $query = 'SELECT last_name, first_name FROM friends';
	      $result = mysql_query($query);
	      if (!$result) {
		  die('Query failed: ' . mysql_error());
	      }
	      /* fetch rows in reverse order */
	      for ($i = mysql_num_rows($result) - 1; $i >= 0; $i--) {
		  if (!mysql_data_seek($result, $i)) {
		      echo "Cannot seek to row $i: " . mysql_error() . "
";
		      continue;
		  }

		  if (!($row = mysql_fetch_assoc($result))) {
		      continue;
		  }

		  echo $row['last_name'] . ' ' . $row['first_name'] . "<br />
";
	      }

	      mysql_free_result($result);
	      ?>

       Note

	       The function mysql_data_seek(3) can be used in conjunction only with mysql_query(3), not with mysql_unbuffered_query(3).

       mysql_query(3), mysql_num_rows(3), mysql_fetch_row(3), mysql_fetch_assoc(3), mysql_fetch_array(3), mysql_fetch_object(3).

PHP Documentation Group 													MYSQL_DATA_SEEK(3)

Check Out this Related Man Page

MYSQL_FIELD_NAME(3)							 1						       MYSQL_FIELD_NAME(3)

mysql_field_name - Get the name of the specified field in a result

SYNOPSIS

       Warning

	      This  extension  is deprecated as of PHP 5.5.0, and will be removed in the future. 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:

		     omysqli_fetch_field_direct(3) [name] or [orgname]

		     o PDOStatement::getColumnMeta [name]

       string mysql_field_name (resource  $result, int	$field_offset)

DESCRIPTION

       mysql_field_name(3) returns the name of the specified field index.

	      o $
		result -The result resource that is being evaluated. This result comes from a call to mysql_query(3).

	      o $
		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.

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

       Example #1

	      mysql_field_name(3) example

	      <?php
	      /* The users table consists of three fields:
	       *   user_id
	       *   username
	       *   password.
	       */
	      $link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
	      if (!$link) {
		  die('Could not connect to MySQL server: ' . mysql_error());
	      }
	      $dbname = 'mydb';
	      $db_selected = mysql_select_db($dbname, $link);
	      if (!$db_selected) {
		  die("Could not set $dbname: " . mysql_error());
	      }
	      $res = mysql_query('select * from users', $link);

	      echo mysql_field_name($res, 0) . "
";
	      echo mysql_field_name($res, 2);
	      ?>

	      The above example will output:

	      user_id
	      password

       Note

	      Field names returned by this function are case-sensitive.

       Note

	       For backward compatibility, the following deprecated alias may be used: mysql_fieldname(3)

       mysql_field_type(3), mysql_field_len(3).

PHP Documentation Group 												       MYSQL_FIELD_NAME(3)

Linux and UNIX Man Pages

mysql_data_seek(3) [php man page]

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