php分析并保留必要的css信息?
求效率最快的方法。代码:<?php$arr=array(
".hd",
".ft",
".bd",
".br"
);
$class_str=<<<STR
.mod{margin:5px;}
.hd,.bd,.ft{overflow:hidden;_overflow:visible; _zoom:1;}
.inner{position:relative;}
b{display:block;background-repeat:no-repeat;font-size:1%;position:relative;z-index:10;}
.tl, .tr, .bl, .br{height:10px; width:10px;float:left;}
.tl{background-position: left top;}
.tr{background-position: right top;}
.bl{background-position: left bottom;}
.br{background-position: right bottom;}
.br,.tr{float:right;}
STR;?>
求效率最快的方法。代码:<?php$arr=array(
".hd",
".ft",
".bd",
".br"
);
$class_str=<<<STR
.mod{margin:5px;}
.hd,.bd,.ft{overflow:hidden;_overflow:visible; _zoom:1;}
.inner{position:relative;}
b{display:block;background-repeat:no-repeat;font-size:1%;position:relative;z-index:10;}
.tl, .tr, .bl, .br{height:10px; width:10px;float:left;}
.tl{background-position: left top;}
.tr{background-position: right top;}
.bl{background-position: left bottom;}
.br{background-position: right bottom;}
.br,.tr{float:right;}
STR;?>
$rst = array();
$x = split("\n",$class_str);foreach($x as $line){
foreach($arr as $search){
if(preg_match("/\{$search}/",$line)){
$rst[]=$line;
break;
}
}
}print_r($rst);
代码未经测试~自己测下!
$arr=array(
"hd",
"ft",
"bd",
"br"
);
$class_str=<<<STR
.mod{margin:5px;}
.hd,.bd,.ft{overflow:hidden;_overflow:visible; _zoom:1;}
.inner{position:relative;}
b{display:block;background-repeat:no-repeat;font-size:1%;position:relative;z-index:10;}
.tl, .tr, .bl, .br{height:10px; width:10px;float:left;}
.tl{background-position: left top;}
.tr{background-position: right top;}
.bl{background-position: left bottom;}
.br{background-position: right bottom;}
.br,.tr{float:right;}
STR;
$arr = implode('|',$arr);
preg_match_all("/\.($arr).*\}/i", $class_str, $out);
print_r($out[0]);