What Is a Result Set Object in PHP

Q

What Is a Result Set Object in PHP?

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A

A result set object is a logical representation of data rows returned by mysql_query() function on SELECT statements. Every result set object has an internal pointer used to identify the current row in the result set. Once you get a result set object, you can use the following functions to retrieve detail information:

  • mysql_free_result($rs) - Closes this result set object.
  • mysql_num_rows($rs) - Returns the number rows in the result set.
  • mysql_num_fields($rs) - Returns the number fields in the result set.
  • mysql_fetch_row($rs) - Returns an array contains the current row indexed by field position numbers.
  • mysql_fetch_assoc($rs) - Returns an array contains the current row indexed by field names.
  • mysql_fetch_array($rs) - Returns an array contains the current row with double indexes: field position numbers and filed names.
  • mysql_fetch_lengths($rs) - Returns an array contains lengths of all fields in the last row returned.
  • mysql_field_name($rs, $i) - Returns the name of the field of the specified index.

 

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2016-10-20, 263👍, 0💬