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POUpdate mysql database fields with array php
 

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    <p>I'm trying to achieve a multiple update in one submit. I have a table with a number of rows and want to be able to update one field in each row just by tabbing to the next insert box.</p> <p>My code is thus:- //start a table echo ' ';</p> <pre><code>//start header of table echo '&lt;tr&gt; &lt;td width="60" align="center"&gt;&lt;strong&gt;Lab Item ID&lt;/strong&gt;&lt;/td&gt; &lt;td width="60" align="center"&gt;&lt;strong&gt;Test Suite Name&lt;/strong&gt;&lt;/td&gt; &lt;td width="60" align="center"&gt;&lt;strong&gt;Test Name&lt;/strong&gt;&lt;/td&gt; &lt;td width="50" align="center"&gt;&lt;strong&gt;Result&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt;'; //loop through all results while ($row=mysql_fetch_object($sql)) { //print out table contents and add id into an array and email into an array echo '&lt;tr&gt; &lt;td align="center"&gt;&lt;input name="id[]" value='.$row-&gt;lab_item_id.' readonly&gt; &lt;/td&gt; &lt;td align="center"&gt;'.$row-&gt;test_suite_name.'&lt;/td&gt; &lt;td align="center"&gt;'.$row-&gt;test_name.'&lt;/td&gt; &lt;td&gt;&lt;input name="test_result[]" type="text" value="'.$row-&gt;test_result.'"&gt;&lt;/td&gt; &lt;/tr&gt;'; } //submit the form echo'&lt;tr&gt; &lt;td colspan="3" align="center"&gt;&lt;input type="submit" name="Submit" value="Submit"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/form&gt;'; //if form has been pressed proccess it if($_POST["Submit"]) { //get data from form //$name = $_POST['name']; //$_POST['check_number'] and $_POST['check_date'] are parallel arrays foreach( $_POST['id'] as $id ) { $tresult = trim($_POST['test_result']); $query = "UPDATE tbl_lab_item SET test_result='$tresult' WHERE lab_item_id = '$id'"; //execute query } print_r($_POST); var_dump($tresult); //redirect user $_SESSION['success'] = 'Updated'; //header("location:index.php"); } ?&gt; </code></pre> <p>When I print the $_POST arrays, everything is populating fine, however the variable is Null. I know I can't do a foreach on multiple arrays (at least I don't think I can) so is there some other trick I'm missing please? I can't be far away as the $_Post print has the right data in it.</p> <p>Incidentally, the whole thing is generated by a query, so I never know how many records I'll have to update.</p> <p>I've been looking at this (and other) forums, but can't seem to get a solution. I thought I understood arrays, but now I'm beginning to wonder!</p> <p>edit - it's the $tresult variable that isn't working. </p> <p>Many thanks, Jason</p> <p>Edit Thursday 21st Feb (05:41 UK time) Thanks for your input everybody. I've solved this one now, and your collective advice helped. The code that finally cracked it is:-</p> <pre><code>//get data from form $id1 = $_POST['id']; $test_result1 = $_POST['test_result']; foreach ($id1 as $key =&gt; $value){ $query = "UPDATE tbl_lab_item SET test_result='$test_result1[$key]' WHERE lab_item_id=$value "; //execute query </code></pre> <p>Working through which variables etc were populated and what they were populated with was the key. Back to first principles, isn't it?</p> <p>Cheers all. J</p>
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    1. COwhich `the variable`? there's many variables in your code.
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    2. COsorry, good point. It's the test_result I'm trying to update in the update query.
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