使用 「PHPWee」：https://github.com/searchturbine/phpwee-php-minifier （也使用JSmin），I一點點進一步推@Robert K溶液。
該解決方案允許縮小CSS和JS文件。如果找不到縮小的文件，它將返回一個空字符串。如果縮小的文件比未縮小的文件大，它會嘗試創建它。如果它不存在，它將爲縮小文件創建一個子文件夾。如果該方法可以成功縮小文件，則它會以<script>（javascript）或<link>（CSS）標記的形式返回該文件。否則，該方法將在適當的標籤中返回未縮小的版本。
注意：用PHP 7.0.13
/**
* Try to minify the JS/CSS file. If we are not able to minify,
* returns the path of the full file (if it exists).
*
* @param $matches Array
* 0 = Full partial path
* 1 = Path without the file
* 2 = File name and extension
*
* @param $fileType Boolean
* FALSE: css file.
* TRUE: js file
*
* @return String
*/
private static function createMinifiedFile(array $matches, bool $fileType)
{
if (strpos($matches[1], 'shared_code') !== false) {
$path = realpath(dirname(__FILE__)) . str_replace(
'shared_code',
'..',
$matches[1]
);
} else {
$path = realpath(dirname(__FILE__)) .
"/../../" . $matches[1];
}
if (is_file($path . $matches[2])) {
$filePath = $link = $matches[0];
$min = 'min/' . str_replace(
'.',
'.min.',
$matches[2]
);
if (!is_file($path . $min) or
filemtime($path . $matches[2]) >
filemtime($path . $min)
) {
if (!is_dir($path . 'min')) {
mkdir($path . 'min');
}
if ($fileType) { // JS
$minified = preg_replace(
array(
'/(\))\R({)/',
'/(})\R/'
),
array(
'$1$2',
'$1'
),
Minify::js(
(string) file_get_contents(
$path . $matches[2]
)
)
);
} else { // CSS
$minified = preg_replace(
'@/\*(?:[\r\s\S](?!\*/))+\R?\*/@', //deal with multiline comments
'',
Minify::css(
(string) file_get_contents(
$path . $matches[2]
)
)
);
}
if (!empty($minified) and file_put_contents(
$path . $min,
$minified
)
) {
$filePath = $matches[1] . $min;
}
} else { // up-to-date
$filePath = $matches[1] . $min;
}
} else { // full file doesn't exists
$filePath = "";
}
return $filePath;
}
/**
* Return the minified version of a CSS file (must end with the .css extension).
* If the minified version of the file is older than the full CSS file,
* the CSS file will be shrunk.
*
* Note: An empty string will be return if the CSS file doesn't exist.
*
* Note 2: If the file exists, but the minified file cannot be created,
* we will return the path of the full file.
*
* @link https://github.com/searchturbine/phpwee-php-minifier Source
*
* @param $path String name or full path to reach the CSS file.
* If only the file name is specified, we assume that you refer to the shared path.
*
* @return String
*/
public static function getCSSMin(String $path)
{
$link = "";
$matches = array();
if (preg_match(
'@^(/[\w-]+/view/css/)?([\w-]+\.css)[email protected]',
$path,
$matches
)
) {
if (empty($matches[1])) { // use the default path
$matches[1] = self::getCssPath();
$matches[0] = $matches[1] . $matches[2];
}
$link = self::createMinifiedFile($matches, false);
} else {
$link = "";
}
return (empty($link) ?
'' :
'<link rel="stylesheet" href="' . $link . '">'
);
}
/**
* Return the path to fetch CSS sheets.
*
* @return String
*/
public static function getCssPath()
{
return '/shared_code/css/' . self::getCurrentCSS() . "/";
}
/**
* Return the minified version of a JS file (must end with the .css extension).
* If the minified version of the file is older than the full JS file,
* the JS file will be shrunk.
*
* Note: An empty string will be return if the JS file doesn't exist.
*
* Note 2: If the file exists, but the minified file cannot be created,
* we will return the path of the full file.
*
* @link https://github.com/searchturbine/phpwee-php-minifier Source
*
* @param $path String name or full path to reach the js file.
*
* @return String
*/
public static function getJSMin(String $path)
{
$matches = array();
if (preg_match(
'@^(/[\w-]+(?:/view)?/js/)([\w-]+\.js)[email protected]',
$path,
$matches
)
) {
$script = self::createMinifiedFile($matches, true);
} else {
$script = "";
}
return (empty($script) ?
'' :
'<script src="' . $script . '"></script>'
);
}
測試在（Smarty的）模板，您可以使用這些方法是這樣的：
{$PageController->getCSSMin("main_frame.css")}
//Output: <link rel="stylesheet" href="/shared_code/css/default/min/main_frame.min.css">
{$PageController->getCSSMin("/gem-mechanic/view/css/gem_mechanic.css")}
//Output: <link rel="stylesheet" href="/gem-mechanic/view/css/min/gem_mechanic.min.css">
{$PageController->getJSMin("/shared_code/js/control_utilities.js")}
//Output: <script src="/shared_code/js/min/control_utilities.min.js"></script>
{$PageController->getJSMin("/PC_administration_interface/view/js/error_log.js")}
//Output: <script src="/PC_administration_interface/view/js/min/error_log.min.js"></script>
單元測試：
/**
* Test that we can minify CSS files successfully.
*/
public function testGetCSSMin()
{
//invalid style
$this->assertEmpty(
PageController::getCSSMin('doh!!!')
);
//shared style
$path = realpath(dirname(__FILE__)) . '/../css/default/min/main_frame.min.css';
if (is_file($path)) {
unlink ($path);
}
$link = PageController::getCSSMin("main_frame.css");
$this->assertNotEmpty($link);
$this->assertEquals(
'<link rel="stylesheet" href="/shared_code/css/default/min/main_frame.min.css">',
$link
);
$this->validateMinifiedFile($path);
//project style
$path = realpath(dirname(__FILE__)) . '/../../gem-mechanic/view/css/min/gem_mechanic.min.css';
if (is_file($path)) {
unlink ($path);
}
$link = PageController::getCSSMin("/gem-mechanic/view/css/gem_mechanic.css");
$this->assertNotEmpty($link);
$this->assertEquals(
'<link rel="stylesheet" href="/gem-mechanic/view/css/min/gem_mechanic.min.css">',
$link
);
$this->validateMinifiedFile($path);
}
/**
* Test that we can minify JS files successfully.
*/
public function testGetJSMin()
{
//invalid script
$this->assertEmpty(
PageController::getJSMin('doh!!!')
);
//shared script
$path = realpath(dirname(__FILE__)) . '/../js/min/control_utilities.min.js';
if (is_file($path)) {
unlink ($path);
}
$script = PageController::getJSMin("/shared_code/js/control_utilities.js");
$this->assertNotEmpty($script);
$this->assertEquals(
'<script src="/shared_code/js/min/control_utilities.min.js"></script>',
$script
);
$this->validateMinifiedFile($path);
//project script
$path = realpath(dirname(__FILE__)) . '/../../PC_administration_interface/view/js/min/error_log.min.js';
if (is_file($path)) {
unlink ($path);
}
$script = PageController::getJSMin("/PC_administration_interface/view/js/error_log.js");
$this->assertNotEmpty($script);
$this->assertEquals(
'<script src="/PC_administration_interface/view/js/min/error_log.min.js"></script>',
$script
);
$this->validateMinifiedFile($path);
}
/**
* Make sure that the minified file exists and that its content is valid.
*
* @param $path String the path to reach the file
*/
private function validateMinifiedFile(string $path)
{
$this->assertFileExists($path);
$content = (string) file_get_contents($path);
$this->assertNotEmpty($content);
$this->assertNotContains('/*', $content);
$this->assertEquals(
0,
preg_match(
'/\R/',
$content
)
);
}
其他注意事項：
- 在
phpwee.php我不得不<?php更換<?。
- 我遇到了命名空間問題（函數
class_exists()無法找到類，即使它們在同一個文件中）。我通過刪除每個文件中的命名空間來解決此問題。
正則表達式不會很快縮小JS代碼。 –
**相關：** http://stackoverflow.com/a/33844247/1163000 –