What are the potential conflicts between 'ob_gzhandler' and 'zlib output compression' in PHP?

The potential conflict between 'ob_gzhandler' and 'zlib output compression' in PHP arises when both methods are used to compress output data, leading to conflicts and unexpected behavior. To solve this issue, it is recommended to disable zlib output compression when using 'ob_gzhandler' to avoid conflicts and ensure proper compression.

// Disable zlib output compression if ob_gzhandler is used
ini_set('zlib.output_compression', 'Off');

// Start output buffering with ob_gzhandler
ob_start('ob_gzhandler');