What are some common mistakes to avoid when writing PHP scripts for text file manipulation?

One common mistake to avoid when writing PHP scripts for text file manipulation is not properly handling file permissions. Make sure to set appropriate permissions for the file to ensure that it can be read, written, and executed as needed. 

// Set appropriate file permissions
chmod("example.txt", 0644);
```

Another common mistake is not properly closing the file after manipulation. Always remember to close the file handle using `fclose()` to release system resources and prevent data loss.

```php
// Open file for writing
$file = fopen("example.txt", "w");

// Write data to file

// Close the file handle
fclose($file);
```

Lastly, not checking for errors when performing file operations can lead to unexpected behavior. Always check for errors using functions like `file_exists()` or `is_readable()` before attempting to manipulate a file.

```php
// Check if file exists and is readable
if (file_exists("example.txt") && is_readable("example.txt")) {
    // Perform file manipulation
} else {
    echo "File does not exist or is not readable.";
}

Keywords

file handling fopen fwrite fclose error handling

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