blob: dd20fcb28b1e4a97b33d89fd4c1c12db7218c74d (
plain)
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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
<?php
namespace Gregwar\Captcha;
use Symfony\Component\Finder\Finder;
/**
* Handles actions related to captcha image files including saving and garbage collection
*
* @author Gregwar <g.passault@gmail.com>
* @author Jeremy Livingston <jeremy@quizzle.com>
*/
class ImageFileHandler
{
/**
* Name of folder for captcha images
* @var string
*/
protected $imageFolder;
/**
* Absolute path to public web folder
* @var string
*/
protected $webPath;
/**
* Frequency of garbage collection in fractions of 1
* @var int
*/
protected $gcFreq;
/**
* Maximum age of images in minutes
* @var int
*/
protected $expiration;
/**
* @param $imageFolder
* @param $webPath
* @param $gcFreq
* @param $expiration
*/
public function __construct($imageFolder, $webPath, $gcFreq, $expiration)
{
$this->imageFolder = $imageFolder;
$this->webPath = $webPath;
$this->gcFreq = $gcFreq;
$this->expiration = $expiration;
}
/**
* Saves the provided image content as a file
*
* @param string $contents
*
* @return string
*/
public function saveAsFile($contents)
{
$this->createFolderIfMissing();
$filename = md5(uniqid()) . '.jpg';
$filePath = $this->webPath . '/' . $this->imageFolder . '/' . $filename;
imagejpeg($contents, $filePath, 15);
return '/' . $this->imageFolder . '/' . $filename;
}
/**
* Randomly runs garbage collection on the image directory
*
* @return bool
*/
public function collectGarbage()
{
if (!mt_rand(1, $this->gcFreq) == 1) {
return false;
}
$this->createFolderIfMissing();
$finder = new Finder();
$criteria = sprintf('<= now - %s minutes', $this->expiration);
$finder->in($this->webPath . '/' . $this->imageFolder)
->date($criteria);
foreach ($finder->files() as $file) {
unlink($file->getPathname());
}
return true;
}
/**
* Creates the folder if it doesn't exist
*/
protected function createFolderIfMissing()
{
if (!file_exists($this->webPath . '/' . $this->imageFolder)) {
mkdir($this->webPath . '/' . $this->imageFolder, 0755);
}
}
}
|
