本文实例讲述了PHP实现的CSS更新类及其用法,非常实用。分享给大家供大家参考。具体如下:
private $csstmpl_path = null;
private $css_path = null;
private $replacetags = array();
private $search_child = false;
private $convert_num = 0;
private $is_ready = 0;
/** 初始化
- @param String $csstmpl_path css模版路径
- @param String $css_path css目标路径
- @param Array $replacetags 需要替换的图片类型
- @param boolean $search_child 是否遍历子文件夹,默认false
*/
public function __construct($csstmpl_path,$css_path,$replacetags=array(),$search_child=false){
if(!is_dir($csstmpl_path) || !is_dir($css_path) || !$replacetags){
$this->is_ready = 0;
}else{
$this->csstmpl_path = $csstmpl_path;
$this->css_path = $css_path;
$this->replacetags = $replacetags;
$this->search_child = $search_child;
$this->is_ready = 1;
}
}
/* 更新css文件 /
public function update(){
if($this->is_ready==0){
$this->response('csstmpl or csspath or replacetags error');
return '';
}
$this->traversing($this->csstmpl_path);
$this->response('covert num:'.$this->convert_num);
}
/** 遍历文件夹
-
@param String $path 文件路径
*/
private function traversing($path){
$handle = opendir($path);
while(($file=readdir($handle))!==false){
if($file!='..' && $file!='.'){
$curfile = $path.'/'.$file;if(is_dir($curfile)){ // folder if($this->search_child){ // 需要遍历子<a href="/tag/wenjian/" target="_blank" class="keywords">文件</a>夹 $this->traversing($curfile); } }elseif($this->checkExt($curfile)){ // css file $dfile = str_replace($this->csstmpl_path,$this->css_path,$curfile); $this->create($curfile,$dfile); $this->response($curfile.' convert to '.$dfile.' success'); $this->convert_num ++; }
}
}
closedir($handle);
}
/* 检查文件后缀 /
private function checkExt($file){
$name = basename($file);
$namefrag = explode('.',$name);
if(count($namefrag)>=2){
if(strtolower($namefrag[count($namefrag)-1])=='css'){ // css文件
return true;
}
}
return false;
}
/** 替换模版内容,写入csspath
- @param String $tmplfile 模版文件
- @param String $dfile 目标文件
*/
private function create($tmplfile,$dfile){
$css_content = file_get_contents($tmplfile);
foreach($this->replacetags as $tag){
$css_content = str_replace($tag,$tag."?".date('YmdHis'),$css_content);
}
if(!is_dir(dirname($dfile))){ // 生成目标路径
mkdir(dirname($dfile),0755,true);
}
file_put_contents($dfile,$css_content,true);
}
/* 输出 /
private function response($content){
echo $content."
";
}
}
?>
demo示例程序如下:
$css_path = ROOT_PATH.'/css';
$csstmpl_path = ROOT_PATH.'/csstmpl';
$replacetags = array('.png','.jpg','.gif');
$cssobj = new CSSUpdate($csstmpl_path,$replacetags);
$cssobj->update();
?>
完整源码点击此处。
希望本文所述对大家PHP程序设计的学习有所帮助。