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PHP Manual :: pg_select

pg_result_status || pg_send_execute || PostgreSQL Functions || PHP Manual

(PHP 4 >= 4.3.0, PHP 5, PHP 7)

pg_select Select records


mixed pg_select ( resource $connection , string $table_name , array $assoc_array [, int $options = PGSQL_DML_EXEC ] )

pg_select() selects records specified by assoc_array which has field=>value. For a successful query, it returns an array containing all records and fields that match the condition specified by assoc_array.

If options is specified, pg_convert() is applied to assoc_array with the specified flags.



PostgreSQL database connection resource.


Name of the table from which to select rows.


An array whose keys are field names in the table table_name, and whose values are the conditions that a row must meet to be retrieved.


Any number of PGSQL_CONV_FORCE_NULL, PGSQL_DML_NO_CONV, PGSQL_DML_ESCAPE, PGSQL_DML_EXEC, PGSQL_DML_ASYNC or PGSQL_DML_STRING combined. If PGSQL_DML_STRING is part of the options then query string is returned. When PGSQL_DML_NO_CONV or PGSQL_DML_ESCAPE is set, it does not call pg_convert() internally.

Return Values

Returns TRUE on success or FALSE on failure. Returns string if PGSQL_DML_STRING is passed via options.


Example #1 pg_select() example

// This is safe, since $_POST is converted automatically
$rec pg_select($db'post_log'$_POST);
  if (
$rec) {
"Records selected\n";
  } else {
"User must have sent wrong inputs\n";


Version Description
5.6.0 No longer experimental. Added PGSQL_DML_ESCAPE constant, TRUE/FALSE and NULL data type support.
5.5.3/5.4.19 Direct SQL injection to table_name and Indirect SQL injection to identifiers are fixed.

See Also

  • pg_convert() - Convert associative array values into suitable for SQL statement

pg_result_status || pg_send_execute || PostgreSQL Functions || PHP Manual
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