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POPHP nested problems while querying
 

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  1. POPHP nested problems while querying
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    <p>I am working on a project. I need to query a DB and write the result to a csv file. The result is going to be over 15,000 entries, (thats what the user wants). I am breaking up the results using the LIMIT because if I don't the DB will time out. I divide the query in what I call total_pages. Here is my code.</p> <p>The big for loop, loops 19 times. The problems is that the code will go through the nested loop one time ( only 500 entries) then It does not go back in. I tried using null on the $results but no luck. Please help.</p> <pre><code>// using this for my LIMIT $start_from = 0; $sql = "select * from someplace where gender = '".$gender."'"; $rs_result = mysql_query($sql); $total_records = mysql_num_rows($rs_result); $total_pages = ceil($total_records / 500); // open a file //write x in file file = fopen("./DataFile/gdownload.csv","w"); //write header to the file $x = "Last Name,First Name,Primary_Name, ........ etc...... \n"; fwrite($file, $x); for($count = 0; $count &lt;= $total_pages; $count++) { $query = "SELECT * FROM ptable JOIN person_name ON ptable.Primary_Name = person_name.Primary_Name WHERE gender = '$gender' ORDER BY person_name.Lname ASC LIMIT ".$start_from.", 500"; $result = mysql_query($query) or die(mysql_error()); $num_row = mysql_num_rows($result); //print tables in rows while($row = mysql_fetch_array($result)) { $x=""; $x=$x.$row['Lname'].","; $x=$x.$row['Fname'].","; $x=$x.$row['Primary_Name'].","; $x=$x.$row['asdf#'].","; $x=$x.$row['qwer'].","; $x=$x.$row['hjkl'].","; $x=$x.$row['bnm,'].","; $x=$x.$row['yui'].","; $x=$x.$row['aaa'].","; ..... fwrite($file, $x); }// end nested while $start_from+=500; }// end for loop fclose($file); </code></pre>
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    1. USuser1329251
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    1. COWhat do you mean "does not go back in"? I see one for-loop that would do `ceil($total_records / 500) + 1` runs. Where's that 19?
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      1. USNanne
    2. COWhen I just this search the total_pages is a count, so that I would now how many times to go through the for loop. When I last tried it, it was 19 total_pages.
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    3. COah, check, brainfail @ `ceil` and `/` on my part, don't mind me :)
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      1. USNanne
 

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