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<?php
/*
* This file contains functions commonly used.
*/
/**
* Copied from http://rogerstringer.com/2013/11/15/generate-uuids-php/
*/
function generate_uuid() {
return sprintf( '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ),
mt_rand( 0, 0xffff ),
mt_rand( 0, 0x0fff ) | 0x4000,
mt_rand( 0, 0x3fff ) | 0x8000,
mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff )
);
}
function dir_exists($path) {
return file_exists($path) && is_dir($path);
}
function format_size($size, $precision = 2) {
$sizes = ['bytes', 'Kb', 'Mb', 'Gb', 'Tb'];
$i = 0;
while (1023 < $size && $i < count($sizes) - 1) {
$size /= 1023;
++$i;
}
return number_format($size, $precision).' '.$sizes[$i];
}
function startsWith($haystack, $needle) {
$length = strlen($needle);
return (substr($haystack, 0, $length) === $needle);
}
function endsWith($haystack, $needle) {
$length = strlen($needle);
return $length === 0 || (substr($haystack, -$length) === $needle);
}
?>
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