mosbth /
cimage
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| 1 | <?php |
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| 2 | /** |
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| 3 | * Enable a fast track cache with a json representation of the image delivery. |
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| 4 | * |
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| 5 | */ |
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| 6 | class CFastTrackCache |
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0 ignored issues
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| 7 | { |
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| 8 | /** |
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| 9 | * Cache is disabled to start with. |
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| 10 | */ |
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| 11 | private $enabled = false; |
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| 12 | |||
| 13 | |||
| 14 | |||
| 15 | /** |
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| 16 | * Path to the cache directory. |
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| 17 | */ |
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| 18 | private $path; |
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| 19 | |||
| 20 | |||
| 21 | |||
| 22 | /** |
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| 23 | * Filename of current cache item. |
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| 24 | */ |
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| 25 | private $filename; |
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| 26 | |||
| 27 | |||
| 28 | |||
| 29 | /** |
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| 30 | * Container with items to store as cached item. |
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| 31 | */ |
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| 32 | private $container; |
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| 33 | |||
| 34 | |||
| 35 | |||
| 36 | /** |
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| 37 | * Enable or disable cache. |
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| 38 | * |
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| 39 | * @param boolean $enable set to true to enable, false to disable |
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0 ignored issues
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There is no parameter named
$enable. Did you maybe mean $enabled?
This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function. It has, however, found a similar but not annotated parameter which might be a good fit. Consider the following example. The parameter /**
* @param array $germany
* @param array $ireland
*/
function finale($germany, $island) {
return "2:1";
}
The most likely cause is that the parameter was changed, but the annotation was not. Loading history...
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| 40 | * |
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| 41 | * @return $this |
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| 42 | */ |
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| 43 | public function enable($enabled) |
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| 44 | { |
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| 45 | $this->enabled = $enabled; |
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| 46 | return $this; |
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| 47 | } |
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| 48 | |||
| 49 | |||
| 50 | |||
| 51 | /** |
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| 52 | * Set the path to the cache dir which must exist. |
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| 53 | * |
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| 54 | * @param string $path to the cache dir. |
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| 55 | * |
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| 56 | * @throws Exception when $path is not a directory. |
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| 57 | * |
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| 58 | * @return $this |
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| 59 | */ |
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| 60 | public function setCacheDir($path) |
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| 61 | { |
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| 62 | if (!is_dir($path)) { |
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| 63 | throw new Exception("Cachedir is not a directory."); |
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| 64 | } |
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| 65 | |||
| 66 | $this->path = rtrim($path, "/"); |
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| 67 | |||
| 68 | return $this; |
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| 69 | } |
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| 70 | |||
| 71 | |||
| 72 | |||
| 73 | /** |
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| 74 | * Set the filename to store in cache, use the querystring to create that |
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| 75 | * filename. |
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| 76 | * |
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| 77 | * @param array $clear items to clear in $_GET when creating the filename. |
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| 78 | * |
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| 79 | * @return string as filename created. |
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| 80 | */ |
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| 81 | public function setFilename($clear) |
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0 ignored issues
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setFilename uses the super-global variable $_GET which is generally not recommended.
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: // Bad
class Router
{
public function generate($path)
{
return $_SERVER['HOST'].$path;
}
}
// Better
class Router
{
private $host;
public function __construct($host)
{
$this->host = $host;
}
public function generate($path)
{
return $this->host.$path;
}
}
class Controller
{
public function myAction(Request $request)
{
// Instead of
$page = isset($_GET['page']) ? intval($_GET['page']) : 1;
// Better (assuming you use the Symfony2 request)
$page = $request->query->get('page', 1);
}
}
Loading history...
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| 82 | { |
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| 83 | $query = $_GET; |
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| 84 | |||
| 85 | // Remove parts from querystring that should not be part of filename |
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| 86 | foreach ($clear as $value) { |
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| 87 | unset($query[$value]); |
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| 88 | } |
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| 89 | |||
| 90 | arsort($query); |
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| 91 | $queryAsString = http_build_query($query); |
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| 92 | |||
| 93 | $this->filename = md5($queryAsString); |
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| 94 | |||
| 95 | if (CIMAGE_DEBUG) { |
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| 96 | $this->container["query-string"] = $queryAsString; |
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| 97 | } |
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| 98 | |||
| 99 | return $this->filename; |
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| 100 | } |
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| 101 | |||
| 102 | |||
| 103 | |||
| 104 | /** |
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| 105 | * Add header items. |
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| 106 | * |
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| 107 | * @param string $header add this as header. |
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| 108 | * |
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| 109 | * @return $this |
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| 110 | */ |
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| 111 | public function addHeader($header) |
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| 112 | { |
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| 113 | $this->container["header"][] = $header; |
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| 114 | return $this; |
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| 115 | } |
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| 116 | |||
| 117 | |||
| 118 | |||
| 119 | /** |
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| 120 | * Add header items on output, these are not output when 304. |
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| 121 | * |
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| 122 | * @param string $header add this as header. |
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| 123 | * |
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| 124 | * @return $this |
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| 125 | */ |
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| 126 | public function addHeaderOnOutput($header) |
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| 127 | { |
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| 128 | $this->container["header-output"][] = $header; |
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| 129 | return $this; |
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| 130 | } |
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| 131 | |||
| 132 | |||
| 133 | |||
| 134 | /** |
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| 135 | * Set path to source image to. |
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| 136 | * |
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| 137 | * @param string $source path to source image file. |
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| 138 | * |
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| 139 | * @return $this |
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| 140 | */ |
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| 141 | public function setSource($source) |
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| 142 | { |
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| 143 | $this->container["source"] = $source; |
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| 144 | return $this; |
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| 145 | } |
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| 146 | |||
| 147 | |||
| 148 | |||
| 149 | /** |
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| 150 | * Set last modified of source image, use to check for 304. |
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| 151 | * |
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| 152 | * @param string $lastModified |
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| 153 | * |
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| 154 | * @return $this |
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| 155 | */ |
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| 156 | public function setLastModified($lastModified) |
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| 157 | { |
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| 158 | $this->container["last-modified"] = $lastModified; |
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| 159 | return $this; |
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| 160 | } |
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| 161 | |||
| 162 | |||
| 163 | |||
| 164 | /** |
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| 165 | * Get filename of cached item. |
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| 166 | * |
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| 167 | * @return string as filename. |
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| 168 | */ |
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| 169 | public function getFilename() |
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| 170 | { |
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| 171 | return $this->path . "/" . $this->filename; |
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| 172 | } |
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| 173 | |||
| 174 | |||
| 175 | |||
| 176 | /** |
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| 177 | * Write current item to cache. |
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| 178 | * |
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| 179 | * @return boolean if cache file was written. |
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| 180 | */ |
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| 181 | public function writeToCache() |
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| 182 | { |
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| 183 | if (!$this->enabled) { |
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| 184 | return false; |
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| 185 | } |
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| 186 | |||
| 187 | if (is_dir($this->path) && is_writable($this->path)) { |
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| 188 | $filename = $this->getFilename(); |
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| 189 | return file_put_contents($filename, json_encode($this->container)) !== false; |
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| 190 | } |
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| 191 | |||
| 192 | return false; |
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| 193 | } |
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| 194 | |||
| 195 | |||
| 196 | |||
| 197 | /** |
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| 198 | * Output current item from cache, if available. |
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| 199 | * |
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| 200 | * @return void |
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| 201 | */ |
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| 202 | public function output() |
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0 ignored issues
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output uses the super-global variable $_SERVER which is generally not recommended.
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: // Bad
class Router
{
public function generate($path)
{
return $_SERVER['HOST'].$path;
}
}
// Better
class Router
{
private $host;
public function __construct($host)
{
$this->host = $host;
}
public function generate($path)
{
return $this->host.$path;
}
}
class Controller
{
public function myAction(Request $request)
{
// Instead of
$page = isset($_GET['page']) ? intval($_GET['page']) : 1;
// Better (assuming you use the Symfony2 request)
$page = $request->query->get('page', 1);
}
}
Loading history...
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| 203 | { |
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| 204 | $filename = $this->getFilename(); |
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| 205 | if (!is_readable($filename)) { |
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| 206 | return; |
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| 207 | } |
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| 208 | |||
| 209 | $item = json_decode(file_get_contents($filename), true); |
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| 210 | |||
| 211 | if (!is_readable($item["source"])) { |
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| 212 | return; |
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| 213 | } |
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| 214 | |||
| 215 | foreach ($item["header"] as $value) { |
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| 216 | header($value); |
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| 217 | } |
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| 218 | |||
| 219 | if (isset($_SERVER["HTTP_IF_MODIFIED_SINCE"]) |
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| 220 | && strtotime($_SERVER["HTTP_IF_MODIFIED_SINCE"]) == $item["last-modified"]) { |
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| 221 | header("HTTP/1.0 304 Not Modified"); |
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| 222 | if (CIMAGE_DEBUG) { |
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| 223 | trace(__CLASS__ . " 304"); |
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| 224 | } |
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| 225 | exit; |
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0 ignored issues
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The method
output() contains an exit expression.
An exit expression should only be used in rare cases. For example, if you write a short command line script. In most cases however, using an Loading history...
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| 226 | } |
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| 227 | |||
| 228 | foreach ($item["header-output"] as $value) { |
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| 229 | header($value); |
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| 230 | } |
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| 231 | |||
| 232 | if (CIMAGE_DEBUG) { |
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| 233 | trace(__CLASS__ . " 200"); |
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| 234 | } |
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| 235 | readfile($item["source"]); |
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| 236 | exit; |
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0 ignored issues
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show
The method
output() contains an exit expression.
An exit expression should only be used in rare cases. For example, if you write a short command line script. In most cases however, using an Loading history...
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| 237 | } |
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| 238 | } |
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| 239 |
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.