How to Delete a Line from the File With PHP

How to delete a line from the file with php?

$contents = file_get_contents($dir);
$contents = str_replace($line, '', $contents);
file_put_contents($dir, $contents);

PHP How to delete a specific line in a text file using user input?

Use this:

$row_number = 0;    // Number of the line we are deleting
$file_out = file("file.txt"); // Read the whole file into an array

//Delete the recorded line
unset($file_out[$row_number]);

//Recorded in a file
file_put_contents("file.txt", implode("", $file_out));

how to delete a single line in a txt file with php

You can use str_replace

$content = file_get_contents('database-email.txt');
$content = str_replace('igor@gmx.de,', '', $content);
file_put_contents('database-email.txt', $content);

how to delete a specific line from a file starting a string in php

Try with this:

<?php
    $f = "data.dat";

    $term = "this";

    $arr = file($f);

    foreach ($arr as $key=> $line) {

        //removing the line
        if(stristr($line,$term)!== false){unset($arr[$key]);break;}
    }

    //reindexing array
    $arr = array_values($arr);

    //writing to file
    file_put_contents($f, implode($arr));
?>

How to Remove Some Line from Text File Using PHP?

Use the file($path) function to get the lines into an array, then loop through it.

$lines = file($path, FILE_IGNORE_NEW_LINES);
$remove = "balblalbllablab";
foreach($lines as $key => $line)
  if(stristr($line, $remove)) unset($lines[$key]);

$data = implode('\n', array_values($lines));

$file = fopen($path);
fwrite($file, $data);
fclose($file);

How to delete first 11 lines in a file using PHP?

Every example here won't work for large/huge files. People don't care about the memory nowadays. You, as a great programmer, want your code to be efficient with low memory footprint.

Instead parse file line by line:

function saveStrippedCsvFile($inputFile, $outputFile, $lineCountToRemove)
{
    $inputHandle = fopen($inputFile, 'r');
    $outputHandle = fopen($outputFile, 'w');

    // make sure you handle errors as well
    // files may be unreadable, unwritable etc…

    $counter = 0;
    while (!feof($inputHandle)) {
        if ($counter < $lineCountToRemove) {
            fgets($inputHandle);
            ++$counter;
            continue;
        }

        fwrite($outputHandle, fgets($inputHandle) . PHP_EOL);
    }

    fclose($inputHandle);
    fclose($outputHandle);
}

How can I remove the last line of a file using php?

This should works :

<?php 

// load the data and delete the line from the array 
$lines = file('filename.txt'); 
$last = sizeof($lines) - 1 ; 
unset($lines[$last]); 

// write the new data to the file 
$fp = fopen('filename.txt', 'w'); 
fwrite($fp, implode('', $lines)); 
fclose($fp); 

?>

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