What are common issues with file permissions in PHP installations?

Common issues with file permissions in PHP installations include not having the correct permissions set for files and directories, leading to errors when trying to read or write files. To solve this, you can use the `chmod()` function in PHP to set the appropriate permissions for files and directories. 

// Set read and write permissions for a file
$filename = 'example.txt';
chmod($filename, 0666);

// Set read, write, and execute permissions for a directory
$directory = 'example_dir';
chmod($directory, 0777);

Keywords

file permissions PHP installations chmod chown security

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