How Can I Delete a Specific Line from a File Using PHP?

Eliminating Lines from Files Using PHP

To erase a complete line from a file in PHP, where the line number is unknown, consider the following steps:

1. Obtain File Contents: Utilize the file_get_contents() function to retrieve the entire contents of the file into a string variable.
2. Perform String Manipulation: Employ the str_replace() function to substitute the specific line with an empty string.
3. Save Updated Contents: Finally, use the file_put_contents() function to overwrite the file with the modified contents.

Example Code:

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

This solution effectively removes the specified line from the file without necessitating the knowledge of its line number.

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