pg_prepare(3) [php man page]

PG_PREPARE(3)															     PG_PREPARE(3)

pg_prepare - Submits a request to create a prepared statement with the given parameters, and waits for completion.

SYNOPSIS

       resource pg_prepare ([resource  $connection], string  $stmtname, string	$query)

DESCRIPTION

       pg_prepare(3)  creates a prepared statement for later execution with pg_execute(3) or pg_send_execute(3). This feature allows commands that
       will be used repeatedly to be parsed and planned just once, rather than each time  they	are  executed.	pg_prepare(3)  is  supported  only
       against PostgreSQL 7.4 or higher connections; it will fail when using earlier versions.

	The  function  creates a prepared statement named $stmtname from the $query string, which must contain a single SQL command. $stmtname may
       be "" to create an unnamed statement, in which case any pre-existing unnamed statement is automatically replaced; otherwise it is an  error
       if  the statement name is already defined in the current session. If any parameters are used, they are referred to in the $query as $1, $2,
       etc.

	Prepared statements for use with pg_prepare(3) can also be created by executing SQL PREPARE statements. (But pg_prepare(3) is more  flexi-
       ble  since it does not require parameter types to be pre-specified.) Also, although there is no PHP function for deleting a prepared state-
       ment, the SQL DEALLOCATE statement can be used for that purpose.

PARAMETERS

	      o $connection
		- PostgreSQL database connection resource. When $connection is not present, the default connection is used. The default connection
		is the last connection made by pg_connect(3) or pg_pconnect(3).

	      o $stmtname
		-  The	name  to give the prepared statement. Must be unique per-connection. If "" is specified, then an unnamed statement is cre-
		ated, overwriting any previously defined unnamed statement.

	      o $query
		- The parameterized SQL statement. Must contain only a single statement. (multiple statements separated  by  semi-colons  are  not
		allowed.) If any parameters are used, they are referred to as $1, $2, etc.

RETURN VALUES

	A query result resource on success or FALSE on failure.

EXAMPLES

       Example #1

	      Using pg_prepare(3)

	      <?php
	      // Connect to a database named "mary"
	      $dbconn = pg_connect("dbname=mary");

	      // Prepare a query for execution
	      $result = pg_prepare($dbconn, "my_query", 'SELECT * FROM shops WHERE name = $1');

	      // Execute the prepared query.  Note that it is not necessary to escape
	      // the string "Joe's Widgets" in any way
	      $result = pg_execute($dbconn, "my_query", array("Joe's Widgets"));

	      // Execute the same prepared query, this time with a different parameter
	      $result = pg_execute($dbconn, "my_query", array("Clothes Clothes Clothes"));

	      ?>

SEE ALSO

       pg_execute(3), pg_send_execute(3).

PHP Documentation Group 													     PG_PREPARE(3)

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PG_EXECUTE(3)															     PG_EXECUTE(3)

pg_execute - Sends a request to execute a prepared statement with given parameters, and waits for the result.

SYNOPSIS

       resource pg_execute ([resource  $connection], string  $stmtname, array  $params)

DESCRIPTION

	Sends a request to execute a prepared statement with given parameters, and waits for the result.

       pg_execute(3) is like pg_query_params(3), but the command to be executed is specified by naming a previously-prepared statement, instead of
       giving a query string. This feature allows commands that will be used repeatedly to be parsed and planned just once, rather than each  time
       they  are  executed. The statement must have been prepared previously in the current session. pg_execute(3) is supported only against Post-
       greSQL 7.4 or higher connections; it will fail when using earlier versions.

	The parameters are identical to pg_query_params(3), except that the name of a prepared statement is given instead of a query string.

PARAMETERS

	      o $connection
		- PostgreSQL database connection resource. When $connection is not present, the default connection is used. The default connection
		is the last connection made by pg_connect(3) or pg_pconnect(3).

	      o $stmtname
		-  The	name  of the prepared statement to execute. if "" is specified, then the unnamed statement is executed. The name must have
		been previously prepared using pg_prepare(3), pg_send_prepare(3) or a PREPARE SQL command.

	      o $params
		- An array of parameter values to substitute for the $1, $2, etc. placeholders in the original prepared query string.  The  number
		of elements in the array must match the number of placeholders.

	      Warning

		      Elements are converted to strings by calling this function.

RETURN VALUES

	A query result resource on success or FALSE on failure.

EXAMPLES

       Example #1

	      Using pg_execute(3)

	      <?php
	      // Connect to a database named "mary"
	      $dbconn = pg_connect("dbname=mary");

	      // Prepare a query for execution
	      $result = pg_prepare($dbconn, "my_query", 'SELECT * FROM shops WHERE name = $1');

	      // Execute the prepared query.  Note that it is not necessary to escape
	      // the string "Joe's Widgets" in any way
	      $result = pg_execute($dbconn, "my_query", array("Joe's Widgets"));

	      // Execute the same prepared query, this time with a different parameter
	      $result = pg_execute($dbconn, "my_query", array("Clothes Clothes Clothes"));

	      ?>

SEE ALSO

       pg_prepare(3), pg_send_prepare(3), pg_query_params(3).

PHP Documentation Group 													     PG_EXECUTE(3)

Linux and UNIX Man Pages

pg_prepare(3) [php man page]

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