What are some potential pitfalls to consider when saving and reading data from a text file in PHP?

One potential pitfall is not handling errors properly when saving or reading data from a text file. It's important to check for file permissions, file existence, and handle any potential exceptions that may occur during file operations. 

// Save data to a text file with error handling
$file = 'data.txt';
$data = 'Hello, world!';

if (file_put_contents($file, $data) === false) {
    echo "Error saving data to file.";
} else {
    echo "Data saved successfully.";
}
```

```php
// Read data from a text file with error handling
$file = 'data.txt';

if (!file_exists($file) || !is_readable($file)) {
    echo "File does not exist or is not readable.";
} else {
    $data = file_get_contents($file);
    echo "Data read successfully: " . $data;
}

Keywords

file handling fopen fwrite fread error handling

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