PHP 常用采集函数

获取所有链接内容和地址

function getAllURL($code){
    preg_match_all('/"\' ]+)["|\']?\s*[^>]*>([^>]+)/i',$code,$arr);
    return array('name'=>$arr[2],'url'=>$arr[1]);
}

获取所有的图片地址

function getImgSrc($code){
    $reg = "/]*src=\"(http:\/\/(.+)\/(.+)\.(jpg|gif|bmp|bnp|png))\"/isU";
    preg_match_all($reg, $code, $img_array, PREG_PATTERN_ORDER);
    return $img_array[1];
}

当前的脚本网址

function getSelfURL(){
    if(!empty($_SERVER["REQUEST_URI"])){
        $scriptName = $_SERVER["REQUEST_URI"];
        $nowurl = $scriptName;
    }else{
        $scriptName = $_SERVER["PHP_SELF"];
        if(empty($_SERVER["QUERY_STRING"])) $nowurl = $scriptName;
        else $nowurl = $scriptName."?".$_SERVER["QUERY_STRING"];
    }
    return $nowurl;
}

把全角数字转为半角数字

function getAlabNum($fnum){
    $nums = array("０","１","２","３","４","５","６","７","８","９");
    $fnums = "0123456789";
    for($i=0;$i<=9;$i++) $fnum = str_replace($nums[$i],$fnums[$i],$fnum);
        $fnum = ereg_replace("[^0-9\.]|^0{1,}","",$fnum);
        if($fnum=="") $fnum=0;
    return $fnum;
}

去除HTML标记

function text2Html($txt){
    $txt = str_replace(" ","　",$txt);
    $txt = str_replace("",">",$txt);
    $txt = preg_replace("/[\r\n]{1,}/isU","\r\n",$txt);
    return $txt;
}

清除HTML标记

function clearHtml($str){
    $str = str_replace('','>',$str);
    return $str;
}

获取指定标记中的内容

function getTagData($str, $start, $end){
    if ( $start == '' || $end == '' ){
        return;
    }
    $str = explode($start, $str);
    $str = explode($end, $str[1]);
    return $str[0];
}

HTML表格的每行转为CSV格式数组

function getTrArray($table) {
    $table = preg_replace("']*?>'si",'"',$table);
    $table = str_replace("",'",',$table);
    $table = str_replace("","{tr}",$table);
    //去掉 HTML 标记
    $table = preg_replace("'<[\/\!]*?[^<>]*?>'si","",$table);
    //去掉空白字符
    $table = preg_replace("'([\r\n])[\s]+'","",$table);
    $table = str_replace(" ","",$table);
    $table = str_replace(" ","",$table);
    $table = explode(",{tr}",$table);
    array_pop($table);
    return $table;
}

将HTML表格的每行每列转为数组，采集表格数据

function getTdArray($table) { 
    $table = preg_replace("']*?>'si","",$table);
    $table = preg_replace("']*?>'si","",$table);
    $table = preg_replace("']*?>'si","",$table);
    $table = str_replace("","{tr}",$table);
    $table = str_replace("","{td}",$table);
    //去掉 HTML 标记
    $table = preg_replace("'<[\/\!]*?[^<>]*?>'si","",$table);
    //去掉空白字符
    $table = preg_replace("'([\r\n])[\s]+'","",$table);
    $table = str_replace(" ","",$table);
    $table = str_replace(" ","",$table);
    $table = explode('{tr}', $table);
    array_pop($table);
    foreach ($table as $key=>$tr) {
        $td = explode('{td}', $tr);
        array_pop($td);
        $td_array[] = $td;
    }
    return $td_array;
}

返回字符串中的所有单词 $distinct=true 去除重复

function splitEnStr($str,$distinct=true) {
    preg_match_all('/([a-zA-Z]+)/',$str,$match);
    if ($distinct == true) {
        $match[1] = array_unique($match[1]);
    }
    sort($match[1]);
    return $match[1];
}