How can file permissions (chmod) affect the ability to save user profiles in PHP?

File permissions (chmod) can affect the ability to save user profiles in PHP because the file may not have the necessary write permissions for the PHP script to modify it. To solve this issue, you can change the file permissions to allow the PHP script to write to the file by using the chmod function in PHP. 

// Set the file permissions to allow writing
$file = 'user_profiles.txt';
chmod($file, 0644);

// Save user profile data to the file
$user_profile_data = "User profile data here";
file_put_contents($file, $user_profile_data, FILE_APPEND);

Keywords

file permissions chmod user profiles PHP save

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