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POphp fgetcsv multiple lines not only one or all
 

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  1. POphp fgetcsv multiple lines not only one or all
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    <p>I wand to read biiiiig CSV-Files and want to insert them into a database. That already works:</p> <pre><code>if(($handleF = fopen($path."\\".$file, 'r')) !== false){ $i = 1; // loop through the file line-by-line while(($dataRow = fgetcsv($handleF,0,";")) !== false) { // Only start at the startRow, otherwise skip the row. if($i &gt;= $startRow){ // Check if to use headers if($lookAtHeaders == 1 &amp;&amp; $i == $startRow){ $this-&gt;createUberschriften( array_map(array($this, "convert"), $dataRow ) ); } else { $dataRow = array_map(array($this, "convert"), $dataRow ); $data = $this-&gt;changeMapping($dataRow, $startCol); $this-&gt;executeInsert($data, $tableFields); } unset($dataRow); } $i++; } fclose($handleF); } </code></pre> <p>My problem of this solution is, that it's very slow. But the files are too big to put it directly into the memory... So I wand to ask, if there a posibility to read, for example 10 lines, into the $dataRow array not only one or all. I want to get a better balance between the memory and the performance.</p> <p>Do you understand what i mean? Thanks for help.</p> <p>Greetz</p> <p>V</p> <p><strong>EDIT:</strong> Ok, I still have to try to find a solution with the MSSQL-Database. My solution was to stack the data and than make a multiple-MSSQL-Insert:</p> <pre><code> while(($dataRow = fgetcsv($handleF,0,";")) !== false) { // Only start at the startRow, otherwise skip the row. if($i &gt;= $startRow){ // Check if to use headers if($lookAtHeaders == 1 &amp;&amp; $i == $startRow){ $this-&gt;createUberschriften( array_map(array($this, "convert"), $dataRow ) ); } else { $dataRow = array_map(array($this, "convert"), $dataRow ); $data = $this-&gt;changeMapping($dataRow, $startCol); $this-&gt;setCurrentRow($i); if(count($dataStack) &gt; 210){ array_push($dataStack, $data); #echo '&lt;pre&gt;', print_r($dataStack), '&lt;/pre&gt;'; $this-&gt;executeInsert($dataStack, $tableFields, true); // reset the stack unset($dataStack); $dataStack = array(); } else { array_push($dataStack, $data); } unset($data); } $i++; unset($dataRow); } } </code></pre> <p>Finaly I have to loop the Stack and build in mulitiple Insert in the method "executeInsert", to create a query like this:</p> <pre><code>INSERT INTO [myTable] (field1, field2) VALUES ('data1', 'data2'),('data2', 'datta3')... </code></pre> <p>That works much better. I still have to check the best balance, but therefor i can change only the value '210' in the code above. I hope that help's everybody with a similar problem. Attention: Don't forget to execute the method "executeInsert" again after readin the complete file, because it could happen that there are still some data in the stack and the method will only be executed when the stack reach the size of 210....</p> <p>Greetz</p> <p>V</p>
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    1. COYou're already reading the csv file line-by-line, so what's the problem?
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    2. COHe wants to read more than one line at a time. What kind of db connection do you use?
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      1. POphp fgetcsv multiple lines not only one or all
      1. USTheWolf
    3. COI use at the moment mysql. (I also can use mssql) I think the problem is not the connection directly ( i know that also takes much time) It takes much longer to read a file line by line, then directly load it into the memory. I hoped that there is a method to read a stack of lines or somethink like this...
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      1. USDer_V
 

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