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PODelete last line and check data in text file
 

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  1. PODelete last line and check data in text file
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    <p>I have the following code to write data to a text file.</p> <pre><code>$somecontent = "data|data1|data2|data3"; $filename = 'test.txt'; // Let's make sure the file exists and is writable first. IF (IS_WRITABLE($filename)) { // In our example we're opening $filename in append mode. // The file pointer is at the bottom of the file hence // that's where $somecontent will go when we fwrite() it. IF (!$handle = FOPEN($filename, 'a')) { PRINT "Cannot open file ($filename)"; EXIT; } // Write $somecontent to our opened file. IF (!FWRITE($handle, $somecontent)) { PRINT "Cannot write to file ($filename)"; EXIT; } PRINT "Success, wrote ($somecontent) to file ($filename)"; FCLOSE($handle); } ELSE { PRINT "The file $filename is not writable"; } </code></pre> <p>Now I want this text file to only every have 10 lines of data and when a new line of data is added which is unique to the other lines then the last line of data is deleted and a new line of data is added.</p> <p>From research I have found the following code however total no idea how to implement it on the above code.</p> <p><a href="https://stackoverflow.com/questions/7711829/check-for-duplicate-value-in-text-file-array-with-php">check for duplicate value in text file/array with php</a></p> <p>and also what is the easiest way to implement the following code? </p> <pre><code>&lt;? $inp = file('yourfile.name'); $out = fopen('yourfile.name','w'); for ($I=0;$i&lt;count($inp)-1);$i++) fwrite($out,$inp[$I]); fclose($out)l ?&gt; </code></pre> <p>Thanks for any help from a PHP newbie.</p>
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