php常用函數集合

1.curl操作

POST方式

public static function httpPost($url, $param = '')
{
    $ch1 = curl_init();
    if (version_compare(PHP_VERSION, '5.5.0', '>')) {
        curl_setopt($ch1, CURLOPT_SAFE_UPLOAD, false);
    }

    curl_setopt($ch1, CURLOPT_URL, $url);
    curl_setopt($ch1, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch1, CURLOPT_SSL_VERIFYHOST, false);
    if (!empty($param)) {
        curl_setopt($ch1, CURLOPT_POST, 1);
        curl_setopt($ch1, CURLOPT_POSTFIELDS, $param);
    }
    curl_setopt($ch1, CURLOPT_RETURNTRANSFER, 1);
    $result = curl_exec($ch1);
    curl_close($ch1);
    return $result;
}

GET方式

public static function httpGet($url)
{
    $oCurl = curl_init();
    if (stripos($url, "https://") !== false) {
        curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, false);
    }
    curl_setopt($oCurl, CURLOPT_URL, $url);
    curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1);
    $sContent = curl_exec($oCurl);
    $aStatus  = curl_getinfo($oCurl);
    curl_close($oCurl);
    if (intval($aStatus["http_code"]) == 200) {
        return $sContent;
    } else {
        return false;
    }
}

去除跨域腳本攻擊

public static function removeXSS($val)
{
    $val    = preg_replace('/([\x00-\x08,\x0b-\x0c,\x0e-\x19])/', '', $val);
    $search = 'abcdefghijklmnopqrstuvwxyz';
    $search .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $search .= '1234567890!@#$%^&*()';
    $search .= '~`";:?+/={}[]-_|\'\\';
    for ($i = 0; $i < strlen($search); $i++) {
        $val = preg_replace('/(&#[xX]0{0,8}' . dechex(ord($search[$i])) . ';?)/i', $search[$i], $val);
        $val = preg_replace('/(&#0{0,8}' . ord($search[$i]) . ';?)/', $search[$i], $val);
    }

    $ra1 = array('javascript', 'vbscript', 'expression', 'applet', 'meta', 'xml', 'blink', 'link', 'style', 'script', 'embed', 'object', 'iframe', 'frame', 'frameset', 'ilayer', 'layer', 'bgsound', 'title', 'base');
    $ra2 = array('onabort', 'onactivate', 'onafterprint', 'onafterupdate', 'onbeforeactivate', 'onbeforecopy', 'onbeforecut', 'onbeforedeactivate', 'onbeforeeditfocus', 'onbeforepaste', 'onbeforeprint', 'onbeforeunload', 'onbeforeupdate', 'onblur', 'onbounce', 'oncellchange', 'onchange', 'onclick', 'oncontextmenu', 'oncontrolselect', 'oncopy', 'oncut', 'ondataavailable', 'ondatasetchanged', 'ondatasetcomplete', 'ondblclick', 'ondeactivate', 'ondrag', 'ondragend', 'ondragenter', 'ondragleave', 'ondragover', 'ondragstart', 'ondrop', 'onerror', 'onerrorupdate', 'onfilterchange', 'onfinish', 'onfocus', 'onfocusin', 'onfocusout', 'onhelp', 'onkeydown', 'onkeypress', 'onkeyup', 'onlayoutcomplete', 'onload', 'onlosecapture', 'onmousedown', 'onmouseenter', 'onmouseleave', 'onmousemove', 'onmouseout', 'onmouseover', 'onmouseup', 'onmousewheel', 'onmove', 'onmoveend', 'onmovestart', 'onpaste', 'onpropertychange', 'onreadystatechange', 'onreset', 'onresize', 'onresizeend', 'onresizestart', 'onrowenter', 'onrowexit', 'onrowsdelete', 'onrowsinserted', 'onscroll', 'onselect', 'onselectionchange', 'onselectstart', 'onstart', 'onstop', 'onsubmit', 'onunload');
    $ra  = array_merge($ra1, $ra2);

    $found = true;
    while ($found == true) {
        $val_before = $val;
        for ($i = 0; $i < sizeof($ra); $i++) {
            $pattern = '/';
            for ($j = 0; $j < strlen($ra[$i]); $j++) {
                if ($j > 0) {
                    $pattern .= '(';
                    $pattern .= '(&#[xX]0{0,8}([9ab]);)';
                    $pattern .= '|';
                    $pattern .= '|(&#0{0,8}([9|10|13]);)';
                    $pattern .= ')*';
                }
                $pattern .= $ra[$i][$j];
            }
            $pattern .= '/i';
            $replacement = substr($ra[$i], 0, 2) . '<x>' . substr($ra[$i], 2);
            $val         = preg_replace($pattern, $replacement, $val);
            if ($val_before == $val) {
                $found = false;
            }
        }
    }
    return $val;
}    

JSON中文轉碼

public static function cn_arr_json($arr)
{
    $_var = self::var_urlencode($arr);
    $_str = json_encode($_var);
    return urldecode($_str);
}
public static function var_urlencode($var)
{
    if (empty($var)) {return false;} //判斷參數是否爲空
    if (is_array($var)) {
        //判斷是否爲數組
        foreach ($var as $k => $v) {
            if (is_scalar($v)) {
                //if用來處理不是數組的情況
                $var[$k] = urlencode($v);
            } else {
                $var[$k] = self::var_urlencode($v); //else用來處理數組
            }
        }
    } else {
        $var = urlencode($var); //用來處理數組
    }
    return $var;
}    

ajax返回

public function ajaxJson($state = 'success',$msg = '',$params = ''){
    $json = array();
    if($msg){$json['msg'] = $msg;}
    if($params){
        if(is_array($params)){
            foreach($params as $key => $val){
                $json[$key] = $val;
            }
        }else{
            $json['p'] = $params;
        }
    }
    $json['state'] = $state;
    echo json_encode($json);exit;
}  

微信獲取授權
function _diy_wxauth($authurl, $scope = 'snsapi_base')
{

$appid=XUETANG_APPID;
$secret = XUETANG_SCRECT;
$code = isset($_GET["code"])?$_GET['code']:'';
if($code){

//第一步:取得openid

    $oauth2Url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=$appid&secret=$secret&code=$code&grant_type=authorization_code";
    $oauth2 = getJson($oauth2Url);

//第二步:根據全局access_token和openid查詢用戶信息

    $access_token = $oauth2["access_token"];
    $openid = $oauth2['openid'];
    $get_user_info_url = "https://api.weixin.qq.com/sns/userinfo?access_token=$access_token&openid=$openid&lang=zh_CN";
    return getJson($get_user_info_url);
}else{
    $redirect_uri = urlencode( WEBSITEURL.$authurl);
    $url ="https://open.weixin.qq.com/connect/oauth2/authorize?appid=$appid&redirect_uri=$redirect_uri&response_type=code&scope=$scope&state=123#wechat_redirect";
    header("Location:".$url);
}

}