workaround for mysqlnd missing driver - php

Question

My hosting provider has PHP 5.3 without mysqlnd installed, and thus it returns an error when I call mysqli_stmt_get_result()
is there any workaround to achieve the same functionality without having to install mysqlnd?
I don't want to change 100's of functions, if there's an easier method, any help will be appreciated :)

Answer 1

I went through a lot of trouble on a server where mysqlnd wasn't available, and had a lot of headaches.
If you don't have mysqlnd installed/loaded whatever, you will get an undefined reference when trying to call mysqli_stmt_get_result().
I wrote my own mysqli_stmt_get_result() and a mysqli_result_fetch_array() to go with it.
<?php
class iimysqli_result
{
public $stmt, $nCols;
}
function iimysqli_stmt_get_result($stmt)
{
/** EXPLANATION:
* We are creating a fake "result" structure to enable us to have
* source-level equivalent syntax to a query executed via
* mysqli_query().
*
* $stmt = mysqli_prepare($conn, "");
* mysqli_bind_param($stmt, "types", ...);
*
* $param1 = 0;
* $param2 = 'foo';
* $param3 = 'bar';
* mysqli_execute($stmt);
* $result _mysqli_stmt_get_result($stmt);
* [ $arr = _mysqli_result_fetch_array($result);
* || $assoc = _mysqli_result_fetch_assoc($result); ]
* mysqli_stmt_close($stmt);
* mysqli_close($conn);
*
* At the source level, there is no difference between this and mysqlnd.
**/
$metadata = mysqli_stmt_result_metadata($stmt);
$ret = new iimysqli_result;
if (!$ret) return NULL;
$ret->nCols = mysqli_num_fields($metadata);
$ret->stmt = $stmt;
mysqli_free_result($metadata);
return $ret;
}
function iimysqli_result_fetch_array(&$result)
{
$ret = array();
$code = "return mysqli_stmt_bind_result(\$result->stmt ";
for ($i=0; $i<$result->nCols; $i++)
{
$ret[$i] = NULL;
$code .= ", \$ret['" .$i ."']";
};
$code .= ");";
if (!eval($code)) { return NULL; };
// This should advance the "$stmt" cursor.
if (!mysqli_stmt_fetch($result->stmt)) { return NULL; };
// Return the array we built.
return $ret;
}
?>

Answer 2

This related question has another workaround to get data without installing mysqlnd. It puts the data into an associative array.
Mysqli - Bind results to an Array

Answer 3

The solution from Daan is very nice! For this, i have to say thank you!
The point is, that i had, based on this, developed a class which works with mysqlnd, when it's there and Daan's alternative when it's missing.
I have built in fetchAssoc, fetchAllAssoc/Array, num_rows as methods. It's still in development and part of youphptube. This maybe also helps Ehab (whish for fetchAssoc).
https://github.com/DanielnetoDotCom/YouPHPTube/blob/master/objects/mysql_dal.php
Usage:
$sql = "SELECT * FROM users WHERE id = ?";
$res = sqlDAL::readSql($sql,"i",array($users_id));
$fullData = sqlDAL::fetchAllAssoc($res);
// $data = sqlDAL::fetchAssoc($res); $data2 = sqlDAL::fetchAssoc($res); // or like this
// $countedRows = sqlDAL::num_rows($res); // or like this
sqlDAL::close($res);
I would made this as a sub-post to Daan's answer, but my reputation is too small.