Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Something went awfully wrong in PHP+MySQL :(
Top Forums Shell Programming and Scripting Something went awfully wrong in PHP+MySQL :( Post 302142878 by Legend986 on Tuesday 30th of October 2007 03:06:18 AM
Old 10-30-2007
Thank you... Actually I tried running the same script locally (by the way, I am running all this on a dedicated Unix machine and not a web server as such) and the same problem repeated. I mean, its doing everything with the same degree of slowness...

What I'm trying to do is an adjacent row comparison and if they are different, I'm copying them onto a different table. The code goes something like this:

Code:
<?php

for($i=2;$i<2749750;$i++) {
	//Get the previous row
	$sql_prev = "SELECT * FROM trace WHERE ID=".($i-1);
        $result_prev = mysql_query($sql_prev);
	$row_prev = mysql_fetch_assoc($result_prev);
	//Get the current row
	$sql_cur = "SELECT * FROM trace WHERE ID=".$i;
	$result_cur = mysql_query($sql_cur);
	$row_cur = mysql_fetch_assoc($result_cur);
	
        //Now select the corresponding ASN numbers from the other table
	$sql_prev_asn = "SELECT * FROM asn_number WHERE ip_address='$row_prev[ip]'";
	$result_prev_asn = mysql_query($sql_prev_asn);
	$row_prev_asn = mysql_fetch_assoc($result_prev_asn);

	$sql_cur_asn = "SELECT * FROM asn_number WHERE ip_address='$row_cur[ip]'";
	$result_cur_asn = mysql_query($sql_cur_asn);
	$row_cur_asn = mysql_fetch_assoc($result_cur_asn);
		
	if(($row_prev_asn['asn'] != $row_cur_asn['asn'])) {
		$sql = "INSERT INTO br(asn1,ip1,asn2,ip2) VALUES('$row_prev_asn[asn]','$row_prev[ip]','$row_cur_asn[asn]','$row_cur[ip]')";
		$result = mysql_query($sql) or die(mysql_error());

	}
}

?>

As you can observe, there are many queries and this is the only way I thought would work... Do you think because I'm trying to say "SELECT * FROM trace WHERE ID=" so many times and that the trace databases is big (around 200 MB) this problem is occuring? But I've actually indexed ID and ip fields...
 

9 More Discussions You Might Find Interesting

1. Cybersecurity

mysql php

with a limited knowledege of php and sql, what is a good and secure way to do passwords running an https server? (1 Reply)
Discussion started by: macdonto
1 Replies

2. UNIX for Dummies Questions & Answers

PHP and MySQL

I want to design a database, using mysql as a backend, and PHP as the frontend, I wanna be able to easily build forms in PHP to communicate with MySQL, is there any programs that will allow this, I really dont want to program all the forms by hand.. thankyou (2 Replies)
Discussion started by: kwalick
2 Replies

3. Shell Programming and Scripting

Problem with PHP and MySQL

Okay, I'm new to this PHP and MySQL stuff, so help would be VERY much appreciated. :) On my iMac runnning Panther, it has MySQL and PHP installed. Yet when I view a PHP file from the iMac or another computer at my house, I get the source code. What's wrong? (11 Replies)
Discussion started by: Danny_10
11 Replies

4. Shell Programming and Scripting

PHP/MySQL slow_queries

Hi All, I have a problem with my database having lots of 'stale' slow_queries. I think the problem may be because of the following code: $numresults=mysql_query("select * from links where catagory=".$catagory." order by linknum"); $numrows=mysql_num_rows($numresults); I believe this... (4 Replies)
Discussion started by: pondlife
4 Replies

5. Programming

MySQL - PHP

Hello every one i have question i want to build DATAbase using PHP as interface i use shell to access to linux . i have in linux psql and SQLplus i'll call all html files that has db tabels from shell directory. what should to do before design php pages. can build the database sql design... (3 Replies)
Discussion started by: Scotch
3 Replies

6. Shell Programming and Scripting

Mysql is not connected in php

Hi, The php is not able to connect into my mysql database. But i can able to connect by manually. I think that I have missed some points. Please guild for the same. Thanks, Mani (1 Reply)
Discussion started by: Mani_apr08
1 Replies

7. Emergency UNIX and Linux Support

Migration of website... PHP/Mysql -which path for DB.php

Hi, I have two websites: website1.com and website2.com I didn't write either but have successfully moved all the files from website1.com to website2.com I (thought) I installed all the correct php modules and website2 is mostly up and running. However, my boss found that when we go to a... (15 Replies)
Discussion started by: Astrocloud
15 Replies

8. Programming

PHP and MySQL

Hello, While I was interpretation the PHP manual on database security the recent past, it said that you should by no means connect to the database as the super user but rather as one more user with more limited options. My question is: How do you generate new users and set access... (2 Replies)
Discussion started by: AimyThomas
2 Replies

9. Web Development

Can't Install MySQL with PHP

Hi, I'm on a Raspberry Pi with Raspbian Wheezy. I urgently need to get MySQL running with PHP, but I get an error. For example: $con=mysql_connect("127.0.0.1","root","******","ids"); gives PHP Fatal error: Call to undefined function mysql_connect() So, I found I needed to install some... (2 Replies)
Discussion started by: FreddoT
2 Replies

LEARN ABOUT PHP

mysql_get_proto_info

MYSQL_GET_PROTO_INFO(3) 						 1						   MYSQL_GET_PROTO_INFO(3)

mysql_get_proto_info - Get MySQL protocol info

SYNOPSIS

       Warning

	      This  extension  is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should
	      be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:

		     omysqli_get_proto_info(3)

       int mysql_get_proto_info ([resource  $link_identifier = NULL])

DESCRIPTION

	Retrieves the MySQL protocol.

	      o $
		link_identifier -The MySQL connection. If the link identifier is not specified,  the  last  link  opened  by  mysql_connect(3)	is
		assumed. If no such link is found, it will try to create one as if mysql_connect(3) was called with no arguments. If no connection
		is found or established, an E_WARNING level error is generated.

	Returns the MySQL protocol on success or FALSE on failure.

       Example #1

	      mysql_get_proto_info(3) example

	      <?php
	      $link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
	      if (!$link) {
		  die('Could not connect: ' . mysql_error());
	      }
	      printf("MySQL protocol version: %s
", mysql_get_proto_info());
	      ?>

	      The above example will output something similar to:

	      MySQL protocol version: 10

       mysql_get_client_info(3), mysql_get_host_info(3), mysql_get_server_info(3).

PHP Documentation Group 												   MYSQL_GET_PROTO_INFO(3)
All times are GMT -4. The time now is 08:24 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy