File size formatter
Owner: coffeeman
Created: 2026-05-01 22:44:43
Size: 0.86 KB
Expires: Never
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<?php
/**
* Converts raw bytes into a human-readable format.
* Perfect for showing users the size of their text uploads.
*
* @param int $bytes The number of bytes
* @param int $precision Number of decimal places
* @return string
*/
function formatBytes(int $bytes, int $precision = 2): string
{
if ($bytes <= 0) {
return '0 B';
}
$units = ['B', 'KB', 'MB', 'GB', 'TB', 'PB'];
// Determine the magnitude of the size
$pow = floor(log($bytes) / log(1024));
$pow = min($pow, count($units) - 1); // Prevent out of bounds
// Calculate the value using bitwise shifts for performance
$value = $bytes / (1 << (10 * $pow));
return round($value, $precision) . ' ' . $units[$pow];
}
// Usage Example:
// echo formatBytes(1048576); // Outputs: 1 MB
// echo formatBytes(1500); // Outputs: 1.46 KB