Call MySql Stored Procedure from PHP (PDO) - php

Question

I am trying to execute a MySQL Stored Procedure using PDO connection, i tried almost everything but not able to execute it.
The SP will only insert and update. Following is the codes I tried till now.
$config = require('protected/config/main.php');
try
{
$db_adat = new PDO($config['components']['db']['connectionString'], $config['components'] ['db']['username'], $config['components']['db']['password']);
$result= $db_adat->prepare('CALL pdv()');
$a = $result->execute();
$a->fetchAll(PDO::FETCH_ASSOC);
I tried with only fetch(), with only fetchAll(), fetchObject(), with fetch(PDO::FETCH_ASSOC), with fetchAll(\PDO::FETCH_ASSOC), but I always get following error
Fatal error: Call to a member function fetchAll() on a non-object in D:\ADAT_System\www\test\protected\controllers\ExportPDVController.php on line 35
I also tried using query() instead of execute(), but that doesn't work either.
I also tried adding a (select * ) statement in SP and tried with all above "fetch" options, but got same error.
The SP takes 7 minutes to complete, but all gave error immediately, so I am guessing it never ran the SP.
I tried as following too
$result= $this->$db_adat->prepare("CALL pdv()");
$result->execute();
but the I got following error:
Object of class PDO could not be converted to string
I am not passing any parameters in SP, just a simple call. Please let me know if any more information is required.

Answer 1

This part of your code is wrong
$result= $db_adat->prepare('CALL pdv()');
$a = $result->execute();
$a->fetchAll(PDO::FETCH_ASSOC);
Because execute() returns a boolean upon success or failure.
You cannot use that to fetch.here is the proper way with appropriate variable names:
$stmt= $db_adat->prepare('CALL pdv()');
$success = $stmt->execute();
if($success){
$result = $stmt->fetchAll(PDO::FETCH_ASSOC);
}else{
echo 'failed to run sp';
}

Answer 2

<?php
if(isset($_POST) && !empty($_POST)){
$SearchPO = (($_POST)['SearchPO']);
}
$stmt = $pdo->prepare("CALL spPO(?)");
$stmt->bindParam(1, $SearchPO, PDO::PARAM_STR|PDO::PARAM_INPUT_OUTPUT|PDO::ATTR_EMULATE_PREPARES, 4000);
$stmt->execute();
do {
$result = $stmt->fetchAll();
} while ($stmt->nextRowset() && $stmt->columnCount());
?>
You must use the nextRowset() function because the next record is 'empty' without it. Source