PHP - Running Multiple Queries

Hi all,

I would like to perform two queries in a mysqli statement before closing the connection. I'm using prepared statements and I've read on the php.net you can perform a multi-query using mysqli->multi_query.
My problem is that I'm only finding useful examples on how to select and fetch results not using prepared statements. I'm a bit lost with how to do this to update two tables. Currently i'm using two seperate connections to do the queries but want to combine these together:

Query one (updates their password and resets number of logins to force password change on next login):

Code: [Select]
                //reset logins to force the user to change password upon next login
$loggedin = '0';

// connect to db for mysqli
require('../db/db.php');

// updates password and number of logins
$insert_stmt = $mysqli->stmt_init();
if ($insert_stmt->prepare("UPDATE users SET their_password=?, loggedin=? WHERE their_username=?")) {
$insert_stmt->bind_param('sss', $their_password, $time, $user_email);
$insert_stmt->execute();
$insert_stmt->close();
}
// if query errors sends an email
if ($mysqli->error) {
try {   
throw new Exception("MySQL error $mysqli->error <br> Query:<br> $query", $mysqli->errno);   
} catch(Exception $e ) {
$mess = "Error No: ".$e->getCode(). " - ". $e->getMessage() . "<br >";
$mess .= nl2br($e->getTraceAsString());
$contact_email = "webmaster@website.com";
$message_sub = "Mysqli Forgotten Password Query Error [UPASSWORD01]";
$hdrs = "From: " . $contact_email . "\r\n";
$hdrs .= "Reply-To: ". $contact_email . "\r\n";
$hdrs .= "MIME-Version: 1.0\r\n";
$hdrs .= "Content-Type: text/html; charset=UTF-8\r\n";
mail($contact_email, $message_sub, $mess, $hdrs);
}
header("refresh: 10; forgotpass.php");
die('ERROR: Unable to reset password. Please check you details and try again or report this error to us using our contact us form.<br><br>We will redirect you back to the forgotten password form in 10 seconds.');
exit();
}
$mysqli->close();

Query two (updates a reset log - to keep track on our user password resets):

Code: [Select]
// change status
$resetstatus = "Successful Reset";

// connect to db for mysqli
require('../db/db.php');

// inserts a new record
$null = NULL;
$insert_stmt = $mysqli->stmt_init();
if ($insert_stmt->prepare("INSERT INTO passwordresets VALUES (?, ?, ?, ?, ?)")) {
$insert_stmt->bind_param('issss', $null, $user_email, $time, $userip, $resetstatus);
$insert_stmt->execute();
$insert_stmt->close();
}

// if query errors sends an email
if ($mysqli->error) {
try {   
throw new Exception("MySQL error $mysqli->error <br> Query:<br> $query", $mysqli->errno);   
} catch(Exception $e ) {
$mess = "Error No: ".$e->getCode(). " - ". $e->getMessage() . "<br >";
$mess .= nl2br($e->getTraceAsString());
$contact_email = "webmaster@website.com";
$message_sub = "Mysqli Forgotten Password Query Error [UARESETLOG01]";
$hdrs = "From: " . $contact_email . "\r\n";
$hdrs .= "Reply-To: ". $contact_email . "\r\n";
$hdrs .= "MIME-Version: 1.0\r\n";
$hdrs .= "Content-Type: text/html; charset=UTF-8\r\n";
mail($contact_email, $message_sub, $mess, $hdrs);
}
header("refresh: 10; forgotpass.php");
die('ERROR: Unable to reset password. Please check you details and try again or report this error to us using our contact us form.<br><br>We will redirect you back to the forgotten password form in 10 seconds.');
exit();
}
$mysqli->close();

Any ideas would be greatly appreciated. Thank you

This topic has been moved to MySQL Help.

http://www.phpfreaks.com/forums/index.php?topic=330871.0

Main script gets class information from a database and prints them so long as the class start date or end date is after today (actually includes today). Main script calls "instructors.php".  It queries another database based on the instructor name ($chef) and then prints the bio information for that instructor.   "instructors.php" works fine on it's own, when I add "$chef = "Chef Name" ("Chef Name" is in the Instructors database).  When it's called from the main script, nothing shows up in that area - even though "Chef Name" is in the database.  All of the other data is printed fine, just not anything from instructors.php.  I verified that it's actually including the file, as I can add "echo "test";" to the top of instructors.php and it prints fine in the main script.   Any ideas of what I'm missing?       Main Script 

<?php 

// Get required login info
include "/path/to/login/info/file.php"; // Get required login info - changed for this post.

$db = new mysqli('localhost', $username, $password, $database); // Connect to DB using required login info
if($db->connect_errno > 0){
    die('Unable to connect to database [' . $db->connect_error . ']');
}

unset($username);// put these variables back to null
unset($password);// put these variables back to null
unset($database);// put these variables back to null


//query db
$sql = <<<SQL
    SELECT *
    FROM `ft_form_7`
	WHERE DATE(class_start_date) >= CURDATE()
	OR DATE(class_end_date) >= CURDATE()
	ORDER BY class_start_date ASC
SQL;

if(!$result = $db->query($sql)){ // if there is an error in running the query, show error message.
    die('There was an error running the query [' . $db->error . ']');
}

while($row = $result->fetch_assoc()){
	// Get start date information
	$start_date = $row['class_start_date']; // Get event_start_date for conversion and call it $start_date
	$start_date_formatted = date("l M d, Y", strtotime($start_date)); // Convert start_date 
	$end_date = $row['class_end_date']; // Get event_end_date for conversion and call it $start_date
	$end_date_formatted = date("M d, Y", strtotime($end_date)); // Convert start_date
	
	// Get time information.
	$start_time = $row['class_start_time']; // Get event_start_time for conversion and call it $start_time
	$start_time_formatted = date("h:i A", strtotime($start_time)); // Convert start_time 
	$end_time = $row['class_end_time']; // Get event_end_time for conversion and call it $end_time
	$end_time_formatted = date("h:i A", strtotime($end_time)); // Convert end_time 
	
	// echo information...
	    echo "<h2>" , $row['class_name'],"</h2>" ; // echo event name
	    echo "<p><strong>",$start_date_formatted; // echo the start date
		if (empty($start_time)) { echo ''; } else { echo " (", $start_time; } // echo start time
		if (empty($end_date)) { echo ''; } else { echo " -","<br />", $end_date_formatted; } // echo end date
		if (empty($end_time)) { echo ')'; } else { echo " - ", $end_time, ")"; } // echo end time
	// if there is no start time, echo nothing. (otherwise it seems to echo 4pm). If it does contain a time, echo the time.
	echo "</strong><br />";

	$chef = $row['Instructor'];
	global $chef;
	
	if ($chef != NULL) {
		require ('instructors.php'); }
	echo $row['class_description'], "<br />";
	echo "<strong>" , $row['type'], "&nbsp;-&nbsp;Cost: &#36;",$row['cost'] , " - #" , $row['course_number'] , "</strong><br />" , "</p>"; // echo class type and cost
}

$db->close();
$result->free();

?>

 instructors.php

<?php

include "/path/to/login/info/file.php"; // Get required login info - changed for this post.

$db_instructors = new mysqli('localhost', $username, $password, $database); // Connect to DB using required login info
if($db_instructors->connect_errno > 0){
    die('Unable to connect to database [' . $db_instructors->connect_error . ']');
}

unset($username);// put these variables back to null
unset($password);// put these variables back to null
unset($database);// put these variables back to null

//query db
$sql_instructors = <<<SQL
    SELECT *
    FROM ft_form_8
    WHERE chef_name = '$chef'
SQL;

if(!$result_instructors = $db_instructors->query($sql_instructors)) { // if there is an error in running the query, show error message.
    die('There was an error running the query [' . $db_instructors->error . ']');
}

	while($row_instructors = $result_instructors->fetch_assoc()) {
	$chef_full_name = $row_instructors['chef_name'];
	$chef_id = $row_instructors['submission_id'];
	$full_bio = $row_instructors['full_bio'];
	echo "<a href=\"#\" class=\"clickme\">" , $chef_full_name , "</a>";
	echo "<div class=\"box\">";
	echo $full_bio , "</div>";
}


$db_instructors->close();
$result_instructors->free();

?>

Hello I have a question. I'm trying to perform multiple queries based off the results from a query.  Is this possible ?

$result = mysql_query("SELECT id FROM sometable");

for each id returned

$result1 = mysql_query("SELECT * FROM someothertable WHERE id=result from $result query");

Any help would be GREAT

I'm using paypal PDT, so when the user has made payment he gets directed back to my site, on that page it executes a special sql query. I noticed I can refresh the page to make duplicate sql queries. How can I avoid this??

I have a scenario in PHP, i need a smart way:
1. I run one process on background forever, scheduler.php - done
2. User on the web submit their task in DB to be processed by the above process(scheduler.php) - done
3. scheduler.php read the db after every 1 sec, looking for user's task.

Problem:
Ideally, if it founds like 10 or more tasks it should process them concurently(in parallel)..i.e it should not wait one task to be fully executed so as to run the next one as one task might take a very long time to be fullu executed.
I would do like exec("nohup php <path>/file_name.php >> /dev/null 2>&1 &"), but if i have alot of tasks this will create zombie processes.

Any smart way to do this will be highly appreciated!

good day dear community,

i am workin on a Curl loop to fetch multiple pages:

i have some examples - and a question:

Example: If we want to get information from 3 sites with CURL we can do it like so:


$list[1] = "http://www.example1.com";
$list[2] = "ftp://example.com";
$list[3] = "http://www.example2.com";


After creating the list of links we should initialize the cURL multi handle and adding the cURL handles.


$curlHandle = curl_multi_init();
for ($i = 1;$i <= 3; $i++)
 $curl[$i] = addHandle($curlHandle,$list[$i]);


Now we should execute the cURL multi handle retrive the
content from the sub handles that we added to the cURL multi handle.

ExecHandle($curlHandle);
for ($i = 1;$i <= 3; $i++)
{
 $text[$i] =  curl_multi_getcontent ($curl[$i]);
 echo $text[$i];
}

In the end we should release the handles from the cURL multi handle by calling curl_multi_remove_handle and close the cURL multi handle!

If we want to another Fetch of sites with cURL-Multi - since this is the most pretty way to do it!
Well I am not sure bout the string concatenation. How to do it - Note I want to fetch several hundred pages:
see the some details for this target-server sites - /(I have to create a loop over several hundred sites).

    * siteone.example/?show_subsite=9009
    * siteone.example/?show_subsite=9742
    * siteone.example/?show_subsite=9871

.... and so on and so forth Question: How to appy this loop into the array of the curl-multi?



<?php
/************************************\
* Multi interface in PHP with curl  *
* Requires PHP 5.0, Apache 2.0 and  *
* Curl         *
*************************************
* Writen By Cyborg 19671897         *
* Bugfixed by Jeremy Ellman         *
\***********************************/

$urls = array(
   "siteone",
   "sitetwo",
   "sitethree"
   );

$mh = curl_multi_init();

foreach ($urls as $i => $url) {
       $conn[$i]=curl_init($url);
       curl_setopt($conn[$i],CURLOPT_RETURNTRANSFER,1);//return data as string 
       curl_setopt($conn[$i],CURLOPT_FOLLOWLOCATION,1);//follow redirects
       curl_setopt($conn[$i],CURLOPT_MAXREDIRS,2);//maximum redirects
       curl_setopt($conn[$i],CURLOPT_CONNECTTIMEOUT,10);//timeout
       curl_multi_add_handle ($mh,$conn[$i]);
}

do { $n=curl_multi_exec($mh,$active); } while ($active);

foreach ($urls as $i => $url) {
       $res[$i]=curl_multi_getcontent($conn[$i]);
       curl_multi_remove_handle($mh,$conn[$i]);
       curl_close($conn[$i]);
}
curl_multi_close($mh);


print_r($res);

?>





I look forward to your ideas.

Hi,

Hello all,

I've tried several ways to calculate a commission in the multi level marketing script, but it all ended up with nothing, recursive functions, nested sets nothing worked, and i'm running out of time to keep trying

I've made multiple queries on the same table, and it's working, but only the first 3 queries, not more, I tried to perform it 4 times (although I need the queries to be performed 13 times) but still only 3 times

example: A recruited B and C, and B recruited D, and D recruited E.... what's supposed to happen is A takes a commission on B, C, D, and E
but now it only takes commission on the first three, and no commission for anyone comes after that, and the same for B, C, D, and E each takes commission on only 3 members down the line, and no more

here is the queries

Code: [Select]
<?
 $result = mysql_query("SELECT * FROM users");


echo "<table width='589' border='1'>
<tr>
<th>ID</th>
<th>Name</th>
<th>National ID</th>
<th>Commission</th>
</tr>";

while($row = mysql_fetch_array($result))
  {
 
$query = mysql_query("SELECT * from users where recruiteris = '".$row['id']."'");
$num_rows=mysql_num_rows($query);

              $id1 = $row['id']; 
               
                $commission = $num_rows;
               
               
            $_SESSION['id1'] = $id1;
               
  echo "<tr>";
  while ($roww = mysql_fetch_array($query))
  {
  $querry=mysql_query("select * from users where recruiteris = '".$roww['id']."'");
    $num_rowss = mysql_num_rows($querry);
  while ($rowws= mysql_fetch_array($querry))
   { $var3= '10';

  $querrys=mysql_query("select * from users where recruiteris = '".$rowws['id']."'");
    $num_rowsss = mysql_num_rows($querrys);
   while ($rowwss= mysql_fetch_array($querrys))
   
   {
    $querryss=mysql_query("select * from users where recruiteris = '".$rowwss['id']."'");
    $num_rowssss = mysql_num_rows($querryss);
   while ($rowwsss= mysql_fetch_array($querryss))
   {
   
   
    $querryr=mysql_query("select * from users where recruiteris = '".$rowwsss['id']."'");
    $num_rowssr = mysql_num_rows($querryr);
    }
    }
    }
    }
    $total= ($commission + $num_rowws + $num_rowwss + $num_rowwsss + $num_rowss + $num_rowssr) * $var3;
 echo  "<td><a href=\"user.php?id=".$row['id']."\">".$row['id']."</a></td>";
echo "<td>" . $row['fname'] .''. $row['lname'] ." </td>";
 echo"<td> ". $row['nid'] ." </td>";
  echo  "<td>".$total."</td>
   </tr>";
  }
 
echo "</table>";
        ?> 

Good day everyone. I go by the nickname Sbosh and I am a newbie in PHP.

I am currently learning php using video tutorials. I need help with regards to php queries.

I have the following code:

"SELECT 'food', 'calories' FROM 'diet' ORDER BY 'id'"

which is supposed to display content from a table inside phpmyadmin which i created manually using phpmyadmin. But It gives an error saying i must check the MariaDB version on how to right this query, something like that.

Please assist on the proper way of writing this code. Again I am a newbie in PHP and just starting to learn, so your help will be highly appreciated.

Hey guys - me again!

I have a discount box, where i wish to check two "if" queries.  These are i) the 'uniquecode' and ii) the 'uses' - so a code can only be used a set amount of times.

1) How do i state that question in php, bearing in mind the "if uses > 0" needs to relate to the same row as the unique code entered?

2) Also, i have stored the session price in $_SESSION['sessionprice'] - is this the best way to do this, and if not how should i store the current price. 

3) Lastly, and how do I do the php mathematics of "$_SESSION['sessionprice'] minus the discount" - again bearing in mind the "discount" needs to relate to the same row as the unique code entered? (as different codes will have different discounts).


This is how far i've gotten:

Code: [Select]
<?php
//connection settings bla bla bla

$uniquecode = $_POST['discountcode'];

mysql_connect($localhost,$username,$password);
@mysql_select_db($database) or die( "Unable to select database");

$discountcodecheck = mysql_query("SELECT uniquecode FROM discounttable WHERE uniquecode = '".$uniquecode."'");
$remainingusescheck = mysql_query("SELECT uses FROM discounttable WHERE uniquecode = '".$uniquecode."'");

if (mysql_num_rows($discountcodecheck) > 0) and if (mysql_num_rows($remainingusescheck) > 0)  // <-- this "and if" doesn't work
{
// discount calculation:
// session price minus the unique code's corresponding discount
// update $_session['discountammount']

}
else
{
?><script type="text/javascript">
alert("Discount Code Entered Is Either Not Valid Or Has Been Previously Used.");
        history.back();
      </script><?php
}

// rest of code and close connection
?>

Any help or comments will, as always be politely welcomed and appreciated

Cheers,

Tom.

ive had these queries working okay until i checked on it today, it's not working anymore..
these are the errors:::
Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in C:\wamp\www\arrastre\add.php on line 105
Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in C:\wamp\www\arrastre\add.php on line 117


if(isset($_POST['add'])){
if($billnmbr=="" or $orno=="" or $payor=="" or $arrastre=="" or $wharfage=="" or $total=="" or $date=="" or $tcl==""){
echo "At least one field was left blank.";
}
else{
$query = mysql_query("select * from `arrastre` WHERE `billnmbr`='$billnmbr'"); /*****************this is my line 105************/
$count = mysql_num_rows($query);
if($count==1){
echo "This billnumber is already in the database.";
}

else{
$bll = strtoupper($billnmbr);
$payr = strtoupper($payor);
$query="insert into `arrastre` (`billnmbr`, `orno`, `payor`, `arrastre`, `wharfage`, `total`, `date`, `tcl`)
values ('$bll', '$orno', '$payr', '$arrastre', '$wharfage', '$total', '$date', '$tcl')";
$result=mysql_query($query);

$query = mysql_query("select * from `arrastre` where `billnmbr`= '$billnmbr'", $link); /************and this is my line 117*************/
$count = mysql_num_rows($query);
if($count==1){
echo "last bill number added: ".$billnmbr;
}
}
Thank you very much for your time and have a nice day.

noob question: I have following two queries I'd like to combined into one - how is this done?

$temp = @mysql_query("SELECT * FROM purchased_leads WHERE leadID = '{$_REQUEST[leadid]}'");

"SELECT refundNotes FROM leads WHERE leadID = '{$_REQUEST[leadid]}'"

I'm trying to figure out how to combine these queries, to decrease server load and load time, but I'm not so good with MySQL queries. Does anyone have any ideas, any help is greatly appreciated, I've been tinkering with this for days now.

$Actv = 0;
$ActvCount = -1;
$ActvUpgrade = 0;
$ActvRenewal = 0;
$ActvVehicleAdds = 0;

$result2 = mysql_query("SELECT * FROM tblOperators WHERE OperatorLocale = 'USA' and OperatorStatus = 'ACTIVE' and Team = 'RENEWALS'");
while($row2 = mysql_fetch_array($result2)) {
 $operID = $row2['OperatorID'];
 
 $result = mysql_query("SELECT * FROM tblUserPayments WHERE OperatorID = '$operID' AND PaymentStatus='OK' AND PaymentDate LIKE '$currentDate%'");

 while($row = mysql_fetch_array($result))
 {
	if($row['PaymentReason'] == 'ACTIVATION'){
		++$ActvCount;
		//if($row['PaymentMethod'] == 'CREDITCARD'){
			$ActvUpgrade += $row['ChargeAmount'];
		//}
	}

	elseif($row['PaymentReason'] == 'UPGRADE'){
		$userid = $row['UserID'];
		$paymentdate = $row['PaymentDate'];
		$result1 = mysql_query("SELECT * FROM tblRenewalInvoices WHERE UserID='$userid' AND ('$paymentdate' >= DATE_SUB(DueDate, INTERVAL 90 DAY) AND '$paymentdate' < DATE_ADD(DueDate, INTERVAL 15 DAY)) AND ParentInvoiceID IS NULL ORDER BY InvoiceNum DESC LIMIT 1");
		if( $row1 = mysql_fetch_array($result1)) {
			$packageid = $row['PackageID'];
			$pack = mysql_query("SELECT * FROM tblUserPackages WHERE PackageID='$packageid';");
			if($pack1 = mysql_fetch_array($pack)){

				$expDate = $pack1['ExpirationDate'];
				$dueDate = $row1['DueDate'];
				$days = mysql_fetch_row(mysql_query("SELECT TO_DAYS('$expDate')-TO_DAYS('$dueDate');"));
				$months = (int)( ((int)$days + 14) / 30.4);
				$years = (int) ( ((int)$days + 182) / 365);
				$Intervals = 0;
				if($years > 0){
					$Intervals = $years;
				}
				if(($pack1['Package'] or 'GPS-SVL') or ($pack1['Package'] == 'GPS-1') or ($pack1['Package'] == 'GPS-1PLUS')){
					if($Intervals > 1){
						//if($row['PaymentMethod'] == 'CREDITCARD'){
							$Actv += $row['ChargeAmount'];
						//}
					}
					else{
						//if($row['PaymentMethod'] == 'CREDITCARD'){
							$ActvRenewal += $row['ChargeAmount'];
						//}
					}
				}
				else{
					$Actv += $row['ChargeAmount'];
				}
			}
			else{
			}
		}
		else{
			//if($row['PaymentMethod'] == 'CREDITCARD')
				$ActvUpgrade += $row['ChargeAmount'];
		}
	}

	elseif($row['PaymentReason'] == 'ADDVEHICLE'){
		//if($row['PaymentMethod'] == 'CREDITCARD')
			$ActvVehicleAdds += $row['ChargeAmount'];
	}
		
 }

$result = mysql_query("SELECT * FROM tblRenewalCalls WHERE OperatorID = '$operID' AND PayStatus='OK' AND DateSubmitted LIKE '$currentDate%'");

 while( $row = mysql_fetch_array($result) )
 {
	if($row['Charged']){
		if ((int)$row['RenewYears'] > 1) {
			$Actv += $row['RenewTotal'];
		}
		else{
			$ActvRenewal += $row['RenewTotal'];
		}
	 }
  }
 }
$total = $Actv+$ActvRenewal+$ActvUpgrade+$ActvVehicleAdds;

$ActvRenewal = $total - ($ActvVehicleAdds + $ActvUpgrade);

$upgradeEarned = $ActvUpgrade;
$renewalEarned = $ActvRenewal;

This must be easy enough, but I'm a noob so go easy on me, please :-)   I have two pieces of code and they're working well on their own. All I need is to put these two conditions into one query.   The first one:

<?php
function childtheme_cat_limited_blog( $query ) {
    if ( $query->is_home() && $query->is_main_query() ) {
        $query->set( 'events_categories', 'mycategory1' );
    }
}
add_action( 'pre_get_posts', 'childtheme_cat_limited_blog' );
?>

And the second:

<?php
function childtheme_cat_limited_blog( $query ) {
    if ( $query->is_home() && $query->is_main_query() ) {
        $query->set( 'category_name', 'mycategory2' );
    }
}
add_action( 'pre_get_posts', 'childtheme_cat_limited_blog' );
?>

I'm sure it's a piece a cake for you guys, but I can't figure it out for the life of me, so any help would be greatly appreciated!   Thank you!   (My goal is here to display posts from two categories on a homepage of a Wordpress site, but to complicate things the two categories are from two different post types.)