|
PHP - Which Is Faster For Three Tables, Mysql Or A Custom Php Function
I have three tables that I can link up via mysql and get the results I need, but I could also query just the one table and get the info from the other two via a function, my question is which is the faster and/or better way and why?
Thanks Similar TutorialsI have a list names in a database table in MySQL that I need to repeat the same search for on my system to get the associated information. Is there a Loop command or some type of trick to making a php script search table1.row1 then table1.row2 then table1.row3 etc. Basically using the row in the table as a variable for the other commands in the code. I really need some direction. Thanks. Say I have a MySQL table with two fields: "id" (primary key, INT(7)) and "hash" (indexed, VARCHAR(32)), and there will be hundreds of thousands of records in this table. Would it be faster / less CPU intensive to use MySQL to match both the id and hash fields to cleaned / sanitized request vars, or just match the id field with MySQL, and then use PHP to determine whether or not the hash is correct? So, mysql_query("SELECT * FROM table WHERE id='" .$id. "' AND hash=' .$hash. '"); or: $query = mysql_query("SELECT * FROM table WHERE id='" .$id. "'"); $row = mysql_fetch_assoc($query); if ($row['hash'] == $hash) .. One scenario you're requiring MySQL to match two things (the hash field would be 32 characters long, like a md5 string), the other way it would only have to find one field (a unique, primary key integer, which should be very fast), but MySQL would need to pull the data and put into an array that PHP can then read to determine if the other field is a match. I'm thinking the all-MySQL way would be faster, but I didn't know about it having to search through hundreds of thousands of records for a string of that size. Any thoughts? Thanks! Hello, I'm developing a browser based chat clients(like the one facebook and gtalk uses) which requires an instant generation of of blocks of html code on clicks. So, what i'am basically trying to do is first writes it down the generated code on a text file using php fwrite function and load it immediately into the site as soon as it is done. Some disadvantages using this system of techniques is the various calculations involved which i believe will delay in the deleivery of the code generated. On the otherhand, this is not so in the case of mysql database as all the values are uniquely stored and determined but the whole lot process of querying and reteieving is another factor that i believe will slow down the performance. please tell me which gonna be a faster one...thanks, p.s almost 50percent coding done Hello, everyone: I'm using PHP and Mysql. I've got a table of that has 30 fields that I need to add together. I've got to do this for each record, and there are about 10,000 records. Which would be more efficient? SELECT SUM( field1 + field2...) or to make an array for the fields and then use array_sum() Thanks. Hi all How do I modify the below code to search multiple tables in mySQL database? $query = "select * from store_items where description like \"%$trimmed%\" or title like \"%$trimmed%\" or dimensions like \"%$trimmed%\" order by id ASC"; $numresults=mysql_query($query); $numrows=mysql_num_rows($numresults); It is for a search function and I need it to search another table called 'about_text' and 'faq_text' Thanks Pete This portion is kind of stumping me. Basically, I have a two tables in this DB: users and users_access_level (Separated for DB normalization) users: id / username / password / realname / access_level users_access_level: access_level / access_name What I'm trying to do, is echo the data onto an HTML table that displays users.username in one table data and then uses the users.access_level to find users_access_level.access_name and echo into the following table data, I would prefer not to use multiple queries if possible or nested queries. Example row for users: 1234 / tmac / password / tmac / 99 Example row for users_access_level: 99 / Admin Using the examples above, I would want the output to appear as such: Username: Access Name: Tmac Admin I am not 100% sure where to start with this, but I pick up quickly, I just need a nudge in the right direction. The code I attempted to create just shows my lack of knowledge of joining tables, but I'll post it if you want to see that I did at least make an effort to code this myself. Thanks for reading! I'm gonna be perfectly honest, I have no idea what's wrong with this code, I'm not even entirely sure what it all means, I just need to make it work. -.- I get this error: Parse error: syntax error, unexpected '}' in Z:\www\cms\includes\functions.php on line 25 From this code: Code: [Select] <html> <body> <?php include('includes/dbvars.php'); function displayVideos($dbc){ mysqli_connect('DB_HOST', 'DB_USER', 'DB_PW', 'DB_NAME'); //Query $query = "SELECT * FROM videos"; //Execute $result = mysqli_query($dbc, $query) or die ("Error querying database."); While ($row = mysqli_fetch_assoc($result)) { echo '<h2>' . $row['Title'] . '</h2>'; echo '<b>Director</b>:' . $row['Director'] . '<br />'; echo '<b>Description</b>:<br />' . $row['Description']; echo '<hr>'; } mysqli_close($dbc) } ?> </body> </html> Any help very much appreciated I need to include a pagination file in multiple pages or create a custom function but not sure which one to use. For example: Code: [Select] <?php function test() { echo "Hello PHP Freaks!"; } ?> Or I can create a separate file that echos this statement and include it. When do you use include/require and when do you create your own custom function? Hi, I'm trying to connect to a database on a port other than 3306 to create a database. Here's my connect code: $connection = new MySQLi($host,$user,$pass)() But according to the PHP website it says I can lay the code out like so: new MySQLi($host,$user,$pass,$database,$port)() But how do I specify the port without the database? I've tried just "" as the database but the connection still fails. Any help would be much appreciated. I'm sure it's not much, but I'm not understanding something with custom error handlers: I've created a custom error handler, which I initially set when my page loads : set_error_handler(array ( new ErrorHandler(), 'handleError' ));
It seems to catch all internal PHP errors, such as if I: var_dump($non_existing_var); right after the set_error_handler.... Now, I have an object that throws an exception after: set_error_handler(array ( new ErrorHandler(), 'handleError' )); $locale = new \CorbeauPerdu\i18n\Locale(...); // this should throw an exception ... I thought that with an error handler set, I could 'skip' the try/catch for it, but doing so, PHP spits out in its internal log: PHP Fatal error: Uncaught CorbeauPerdu\i18n\LocaleException: ....
My error handler doesn't catch it at all before, thus my page breaks!! If I want it to go through the error handler, I have to init my Locale with a try/catch and use trigger_error() like so:
set_error_handler(array ( new ErrorHandler(), 'handleError' ));
try {
$locale = new \CorbeauPerdu\i18n\Locale(...); // this should throw an exception
}
catch(Exception $e) {
trigger_error($e->getMessage(), E_USER_ERROR);
}
...
Is this normal ? I thought one of the goals of the error_handler was to catch anything that wasn't dealt with? Thanks for your answers! At the moment I have multiple pages with different HTML tables coded in (some have 5 columns and some 6 etc) and PHP echoing out data to populate from the database. The table in each page holds different data. It looks messy to me to code a different table for every page so I'm wondering if it's possible to create a function to do this? The function would have to print tables with different amounts of columns and echo out different data depending on what the page is along with table headers etc. How would I go about that? just trying to see if i have this right in my head here.. if i have a page that has a topic on it and many replies, the tables would look like this.. would this be the right code to pull out the topic AND all responses for say. www.mysite.com/view?id=1 $topic = 'SELECT * from topics where id = $id' $replies = 'SELECT * from replies where replies.topic_id = $id' I need some help on how to search in two different mysql tables, and then show the results sorted/ordered by the tables. Quote RESULTS: Tabel 1 # ... # ... Tabel 2 # ... # ... Thanks in advance! I have looked all over the net on how to fix this... I am creating a baseball statistical website and I have 2 tables with identical columns (2012hitting and 2013hitting). I am trying to create a page where I can 1) group each year's statistics (which I have been able to do) and 2) have a row named "Career Totals". Each table has about 15 columns, various stats. How can I add the data from my 2012hitting table to my 2013hitting table into a Career Totals row for each player? This is what I'm trying now: Code: [Select] /* CONNECTION VARIABLES */ $id = $_GET['id']; // get var from URL /* Get data. */ $sql = "SELECT * (sum(2012hitting.hr) +sum(2013hitting.hr)) as totalhr FROM 2012hitting, 2013hitting WHERE id='$id'"; $result = mysql_query($sql); ?> <?php $alternate = "2"; while ($row = mysql_fetch_array($result)) { $field1 = $row["season"]; $field2 = $row["team"]; $field3 = $row["games"]; $field4 = $row["ave"]; $field5 = $row["slg"]; $field6 = $row["r"]; $field7 = $row["h"]; $field8 = $row["rbi"]; $field9 = $row["bb"]; $field10 = $row["k"]; $field11 = $row["hr"]; $field12 = $row["dbl"]; $field13 = $row["tpl"]; $field14 = $row["sb"]; $field15 = $row["obp"]; $field16 = $row["ops"]; if ($alternate == "1") { $color = "#ffffff"; $alternate = "2"; } else { $color = "#E4E4E4"; $alternate = "1"; } echo "<tr bgcolor=$color><td align='center'>$field1</td><td align='center'>$field2</td><td align='center'>$field3</td><td align='center'>$field4</td><td align='center'>$field5</td><td align='center'>$field6</td><td align='center'>$field7</td><td align='center'>$field8</td><td align='center'>$field9</td><td align='center'>$field10</td><td align='center'>$field11</td><td align='center'>$field12</td><td align='center'>$field13</td><td align='center'>$field14</td><td align='center'>$field15</td><td align='center'>$field16</td></tr>"; } echo "</table>"; ?> Thank you in advance! I'm trying to pull user referral data from my database. This is what I have so far. <table cellpadding="0" cellspacing="0" style="border:1px #000000 solid;" width="68%"> <tr> <td bgcolor="#eeeeee" style="padding:2px;border-right:1px #000 solid;border-bottom:1px #000 solid;"><font size="2" face="verdana"><b> User </b></font></td> <td bgcolor="#eeeeee" style="padding:2px;border-right:1px #000 solid;border-bottom:1px #000 solid;"><font size="2" face="verdana"><b> </b></font></td> <td bgcolor="#eeeeee" style="padding:2px;border-right:1px #000 solid;border-bottom:1px #000 solid;"><font size="2" face="verdana"><b> Date </b></font></td> <td bgcolor="#eeeeee" style="padding:2px;border-bottom:1px #000 solid;"><font size="2" face="verdana"><b> Visits </b></font></td> </tr> <? $lole=$_COOKIE["usNick"]; $tabla = mysql_query("SELECT * FROM tb_users where username='$lole' ORDER BY id ASC"); while ($row = mysql_fetch_array($tabla)) { echo "<tr><td><font size=\"2\" face=\"verdana\">"; echo $row["username"]; echo "</font></td><td><font size=\"2\" face=\"verdana\">"; echo $row["email"]; echo "</font></td><td><font size=\"2\" face=\"verdana\">"; echo $row["joindate"]; echo "</font></td><td><font size=\"2\" face=\"verdana\">"; echo $row["visits"]; echo "</font></td></tr>"; } echo "</table>"; ?> <script type="text/javascript"> initSortTable('myTable',Array('S','N','S','N','S')); </script> I just found out my user ID is missing from database..
$sql = "SELECT * FROM leads WHERE accesstoken = '".$_POST["userAc"]."'";
$result = mysql_query($sql) or trigger_error("Query Failed: " . mysql_error());
if(mysql_num_rows($result)>0)
{
while($row = mysql_fetch_array($result))
{
$id= $row['id'];
$fullname= $row['fullname'];
$email= $row['email'];
$to = $email;
$message .= $_POST["userMessage"];
$subject = $_POST["userSubject"];
$headers = "From: " . $_POST["userEmail"] . "\r\n";
$headers .= "Reply-To: ". $_POST["userEmail"] . "\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html; charset=ISO-8859-1\r\n";
if (mail($to, $subject, $message, $headers))
{
$output = json_encode(array('type'=>'error', 'text' => '<p>Your Message was sent successfully!</p>'));
die($output);
}
else
{
$output = json_encode(array('type'=>'error', 'text' => '<p>Your Message was not sent!</p>'));
die($output);
}
}
}
I have another table called accounts
that I want to join with this one, I need to select from ref to get the email from account table also!be something like this
$sql = "SELECT * FROM accounts WHERE ref = '".$_POST["userAc"]."'";
$result = mysql_query($sql) or trigger_error("Query Failed: " . mysql_error());
Heyyzarrh, iv been having troubles trying to make it so my PHP script will echo out the username by corresponding the posters ID with the ID in the members table. Heres what iv got so far: Code: [Select] <?php if ($urlid == "") { } $sql = mysql_query("SELECT members.username, posts.mem_id, posts.post_date, posts.post FROM members JOIN posts ON members.id = posts.mem_id WHERE posts.mem_id='$urlid' ORDER BY post_date DESC LIMIT 20"); while ($row = mysql_fetch_array($sql)){ echo '<b>' .$row['$username']. ':</b> '.$row['post'].'<br />At: '.$row['post_date'].'<br /><br />'; } ?> Please help!! :S so far only the actual posts data comes out not the username from the table "members"... Okay so I have 2 tables in my database. One called user and one called messages. A user logs in to the message board and leaves a message (eg nice website). They write in the author name and the message then after the message is posted it says "Nice website" Posted by (author) on (date). All is good so far. It works. However if you look at my code you will see I have a session started. This session is storing the username of the logged in user. From the column username in the users table. (This table has has an id for each user). Ive played around with the code trying to make it so the user doesnt have to fill in the author box. I want rid of that box So the logged in user just leaves a message then it says "posted by (username) on (date). Im missing something from my code. Can anyone tell me what? Please? <?php session_start(); mysql_connect("*************", "*****************", "***************"); mysql_select_db("***********************"); $time = time(); //this checks to see if the $_SESSION variable has been not set //or if the $_SESSION variable has been not set to true //and if one or the other is not set then the user gets //sent to the login page if (!isset($_SESSION['username'])) { header('Location: http://***************.com/login.php'); } $query = "INSERT INTO messages VALUES( NULL, '". mysql_real_escape_string($_POST['message']) ."', '". mysql_real_escape_string($_POST['username']) ."', '$time' )";if( $result = mysql_query($query) ) { if(mysql_affected_rows() > 0 ) { echo "Message Posted.<br><a href='messageboard.php'>Return</a>"; } else { echo 'There was an error posting your message. Please try again later.'; } } else { echo "There was a database error."; // comment out next line for live site. echo "<br>Query string: $query<br>Returned error: " . mysql_error() . '<br>'; } ; I'm creating a staff directory that I'd like to use alternating background colors (odd/even) to make it easier to read. All of the information is stored in sql, which I can pull to the page with a repeat function, but I'm not sure how to get the zebra effect to alternate with the output. Is there any easy way to do this? I'm using CSS to change the background of the table itself. Code: [Select] <table width="100%" border="0" cellpadding="1" cellspacing="0" class="staff_b"> <tr> <td width="35%"><div class="staff_h">Name</div></td> <td width="35%"><div class="staff_h">Department</div></td> <td width="30%"><div class="staff_h">Extension</div></td> </tr> <tr class="staff_e"> <td>1</td> <td>2</td> <td>3</td> </tr> <tr class="staff_o"> <td>4</td> <td>5</td> <td>6</td> </tr> </table> |
|||||||