1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
<?php
/**
* Created by PhpStorm.
* User: zdev
* Date: 10.01.15
* Time: 11:54
*/
namespace Files\Core\Util;
class StringUtil
{
/**
* Return size to human readable filesize
*
* @static
* @param int $filesize in bytes
* @param int $decimals digits
*
* @return string human readable filesize
*/
static function human_filesize($bytes, $decimals = 2)
{
$sz = ' KMGTP';
$factor = (int)floor((strlen($bytes) - 1) / 3);
return sprintf("%.{$decimals}f", $bytes / pow(1024, $factor)) . " " . @$sz[$factor] . "B";
}
/**
* check if a string starts with a specific char
*
* @static
* @param string $haystack
* @param string $needle
*
* @return boolean true if $needle is found in $haystack
*/
static function startsWith($haystack, $needle)
{
return !strncmp($haystack, $needle, strlen($needle));
}
/**
* Creates a random string
*
* @static
* @param int length The length of the random string
*
* @return string a random string
*/
static function randomstring($length = 6)
{
// $chars - all allowed charakters
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
srand((double)microtime() * 1000000);
$i = 0;
$pass = "";
while ($i < $length) {
$num = rand() % strlen($chars);
$tmp = substr($chars, $num, 1);
$pass = $pass . $tmp;
$i++;
}
return $pass;
}
/**
* check if a string ends with a specific char
*
* @static
* @param string $haystack
* @param string $needle
*
* @return boolean true if $haystack ends with $needle
*/
static function endsWith($haystack, $needle)
{
$length = strlen($needle);
if ($length == 0) {
return true;
}
return (substr($haystack, -$length) === $needle);
}
}
|
