What potential issues could arise when using file operations in PHP scripts, as seen in the provided code?

One potential issue when using file operations in PHP scripts is not properly handling errors that may occur during file manipulation, such as file not found, permission denied, or disk full errors. To solve this, it's important to implement error handling mechanisms, such as checking the return values of file operations and using try-catch blocks to catch and handle exceptions. 

<?php
$filename = "example.txt";

try {
    $file = fopen($filename, "r");
    if ($file === false) {
        throw new Exception("Unable to open file.");
    }
    
    // File operations here
    
    fclose($file);
} catch (Exception $e) {
    echo "Error: " . $e->getMessage();
}
?>

Keywords

file operations PHP scripts potential issues error types functions

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