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PHP:pg_execute()的用法_PostgreSQL函数
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(PHP 5 >= 5.1.0)
pg_execute — Sends a request to execute a prepared statement with given parameters, and waits for the result.
说明 resource pg_execute ([ resource $connection ], string $stmtname , array $params )Sends a request to execute a prepared statement with given parameters, and waits for the result.
pg_execute() is like pg_query_params(), 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() is supported only against PostgreSQL 7.4 or higher connections; it will fail when using earlier versions.
The parameters are identical to pg_query_params(), except that the name of a prepared statement is given instead of a query string.
参数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() or pg_pconnect().
stmtnameThe 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(), pg_send_prepare() or a PREPARE SQL command.
paramsAn array of parameter values to substitute for the $1, $2, etc. placeholders in the original prepared query string. The number of elements in the array must match the number of placeholders.
WarningElements are converted to strings by calling this function.
返回值A query result resource on success 或者在失败时返回 FALSE.
范例
Example #1 Using pg_execute()
<?php//Connecttoadatabasenamed"mary"$dbconn=pg_connect("dbname=mary");//Prepareaqueryforexecution$result=pg_prepare($dbconn,"my_query",'SELECT*FROMshopsWHEREname=$1');//Executethepreparedquery.Notethatitisnotnecessarytoescape//thestring"Joe'sWidgets"inanyway$result=pg_execute($dbconn,"my_query",array("Joe'sWidgets"));//Executethesamepreparedquery,thistimewithadifferentparameter$result=pg_execute($dbconn,"my_query",array("ClothesClothesClothes"));?> 参见pg_prepare() - Submits a request to create a prepared statement with the given parameters, and waits for completion. pg_send_prepare() - Sends a request to create a prepared statement with the given parameters, without waiting for completion. pg_query_params() - Submits a command to the server and waits for the result, with the ability to pass parameters separately from the SQL command text.
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