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POIf IDs from two different tables are equal, display name from another table
 

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  1. POIf IDs from two different tables are equal, display name from another table
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    <p>I'm writing a code for my little admin panel, and since I'm not that advanced of a coder, I'm experiencing some troubles with getting a name using two different tables.</p> <p>Here's my code so far:</p> <pre><code>&lt;?php session_start(); if(!session_is_registered(myusername)){ header("location:main_login.php"); } include 'db_connect.php'; $sql = "SELECT * FROM $tbl_name WHERE is_dead='0'"; $result=mysql_query($sql); ?&gt; &lt;title&gt;Title&lt;/title&gt; &lt;center&gt;&lt;img src="header.png"&gt;&lt;/center&gt; &lt;table width="400" border="0" cellspacing="1" cellpadding="0"&gt; &lt;tr&gt; &lt;td&gt; &lt;table width="400" border="1" cellspacing="0" cellpadding="3"&gt; &lt;tr&gt; &lt;? include 'menu.php';?&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="center"&gt;&lt;strong&gt;ID&lt;/strong&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;Unique ID&lt;/strong&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;Model&lt;/strong&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;Last Online&lt;/strong&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;Options&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php while($rows=mysql_fetch_array($result)){ ?&gt; &lt;tr&gt; &lt;td&gt;&lt;? echo $rows['id']; ?&gt;&lt;/td&gt; &lt;td&gt;&lt;? if ($rows['unique_id'] == 7815684) { echo '&lt;font color="blue"&gt;&lt;b&gt;&lt;u&gt;7815684&lt;/u&gt;&lt;/b&gt;&lt;/font&gt;'; } elseif ($rows['unique_id'] == 2312964) { echo '&lt;font color="blue"&gt;&lt;b&gt;&lt;u&gt;2312964&lt;/u&gt;&lt;/b&gt;&lt;/font&gt;'; } else { echo $rows['unique_id']; } ?&gt;&lt;/td&gt; &lt;td&gt;&lt;? echo $rows['model']; ?&gt;&lt;/td&gt; &lt;td align='center'&gt;&lt;font color="green"&gt;&lt;b&gt;&lt;? echo $rows['last_updated']; ?&gt;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;a href="update.php?id=&lt;? echo $rows['id']; ?&gt;"&gt;update&lt;/a&gt; &lt;/tr&gt; &lt;?php } ?&gt; &lt;/table&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </code></pre> <p>So what I'm trying to do is to get user name, using two tables <code>$tbl_name</code> and <code>$prtalbe</code> using their unique_id. So, if unique_id from <code>$tbl_name</code> equals unique_id from <code>$prtable</code>, I want to show user's name from <code>$prtalbe</code>.</p> <p>I've been trying another sql query: </p> <pre><code>$sql = "SELECT * FROM $tbl_name, $prtable WHERE $tbl_name.unique_id = $prtable.unique_id; $result=mysql_query($sql); </code></pre> <p>Then doing while loop to get it working</p> <pre><code>while($rows=mysql_fetch_array($result)){ $rows['name']; } </code></pre> <p>and it did work actually, but it didn't want to put it right into my code, since <code>ID</code> from <code>$prtable</code> and <code>$tbl_name</code> are different. </p>
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    1. PTQuestion
    1. USwallyk
    1. USpapi
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      1. VTUpMod
    1. COIf the IDs are different then these lines will not show up. Your query looks OK and it will definitely *only* request those lines with *equal* IDs. So, where is the problem?
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      1. UScars10m
    2. COI just edited to fix several issues, but I am not sure what was intended with the "while loop to get it working" example. Please check it and correct if I made it worse.
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      1. USwallyk
 

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