利用php GD库 文字图片水印 缩略图

GD库是php中一个默认的强大的图片处理库了，我们可以利用它来对图片进行一些操作或生成图片的操作，下面我们来看文字图片水印缩略图在php中的实例。

一：添加文字水印 使用方法

require 'image.class.php'
$src="001.jpg";
$content="hello";
$font_url="my.ttf";
$size=20;
$image=new Image($src);
$color=array(
0=>255,
1=>255,
2=>255,
2=>20
);
$local=array(
'x'=>20,
'y'=>30
);
$angle=10;
$image->fontMark($content,$font_url,$size,$color,$local,$angle);
$image->show();

二：图片缩略图 使用方法：

require 'image.class.php'
$src="001.jpg";
$image=new Image($src);
$image->thumb(300,200);
$image->show();

三：image.class.php

class image{
private $info;
private $image;
public function __contruct($src){
$info= getimagesize($src);
$this->info=array(
'width'=> $info[0],
'height'=>$info[1],
'type'=>image_type_to_extension($info[2],false),
'mime'=>$info['mime'],
 
);
$fun="imagecreatefrom{$this->info['type']}";
 
$this->image= $fun($src);
 
}
 
//缩略图
public function thumd($width,$height){
$image_thumb= imagecreatetruecolor($width,$height);
imagecopyresampled($image_thumb,$this->image,0,0,0,0,$width,$height,$this->info['width'],$this->info['height']);
imagedestroy($this->image);
$this->image=$image_thumb;
 
}
//文字水印
public function fontMark($content,$font_url,$size,$color,$local,$angle){
 
$col=imagecolorallocatealpha($this->image,$color[0],$color[1],$color[2],$color[3]);
$text=imagettftext($this->image,$size,$angle,$local['x'],$local['y'],$col,$font_url,$content);
}
//输出图片
public function show()
{
header("Content-type:",$this->info['mime']);
 
$func="image{$this->info['type']}";
$func($this->image);
 
}
public function save($nwename){
$func="image{$this->info['type']}";
//从内存中取出图片显示
$func($this->image);
//保存图片
$func($this->image,$nwename.$this->info['type']);
 
}
public function _destruct(){
 
imagedestroy($this->image);
}
 
}

微信扫码网站自动登录的原是还是比较简单的，只要各位知道相互的原理就可以实现了，下面我们来看两个例子，我相信各位看了这两个例子肯定知道怎么来做了。

magento 微信扫码网站自动登录

案例仿照了微信联合登陆的做法，微信联合登陆介绍：

https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&lang=zh_CN

查看授权后接口调用（UnionID），不难发现填写回调地址，用户确认登陆pc端即可跳转

获取UnionID方法

public function wcallbackAction(){
 
$code = $_GET['code'];
$state = $_GET['state'];
$setting = include CONFIG_PATH . 'setting.php';
$appid=$setting['weixin']['appid'];
$appsecret=$setting['weixin']['appsecret'];
 
if (empty($code)) $this->showMessage('授权失败');
try{
 
$token_url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$appid.'&secret='.$appsecret.'&code='.$code.'&grant_type=authorization_code';
 
$token = json_decode($this->https_request($token_url));
 
}catch(Exception $e)
{
print_r($e);
}
 
if (isset($token->errcode)) {
echo '<h1>错误：</h1>'.$token->errcode;
echo '<br/><h2>错误信息：</h2>'.$token->errmsg;
exit;
}
 
$access_token_url = 'https://api.weixin.qq.com/sns/oauth2/refresh_token?appid='.$appid.'&grant_type=refresh_token&refresh_token='.$token->refresh_token;
//转成对象
$access_token = json_decode($this->https_request($access_token_url));
if (isset($access_token->errcode)) {
echo '<h1>错误：</h1>'.$access_token->errcode;
echo '<br/><h2>错误信息：</h2>'.$access_token->errmsg;
exit;
}
$user_info_url = 'https://api.weixin.qq.com/sns/userinfo?access_token='.$access_token->access_token.'&openid='.$access_token->openid.'&lang=zh_CN';
//转成对象
$user_info = json_decode($this->https_request($user_info_url));
if (isset($user_info->errcode)) {
echo '<h1>错误：</h1>'.$user_info->errcode;
echo '<br/><h2>错误信息：</h2>'.$user_info->errmsg;
exit;
}
//打印用户信息
// echo '<pre>';
// print_r($user_info);
// echo '</pre>';
 
//获取unionid
 
$uid=$user_info->unionid;
 
}
 
//用户操作处理 分为再次登录和第一次登陆
 
$sql="select h_user_id from dtb_user_binded as t1 left join dtb_user_weixin as t2 on t1.u_id=t2.id where t1.u_type='".
User::$arrUtype['weixin_num_t']."' and t2.openid='$user_info->unionid'";
$h_user_id = Core_Db::getOne($sql);
if(!empty($h_user_id)){//该weixin号再次登录
 
}{//该weixin号第一次登录
 
}

php 微信扫码 pc端自动登陆注册

用的接口scope 是snsapi_userinfo,微信登陆一个是网页授权登陆，另一个是微信联合登陆

网页授权登陆：http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html

微信联合登陆：https://open.weixin.qq.com/cgi-bin/frame?t=home/web_tmpl&lang=zh_CN

一：首先把微信链接带个标识生成二维码

比如链接为 https://open.weixin.qq.com/connect/oauth2/authorize?appid=’.$appid.’&redirect_uri=’.$url.’&response_type=code&scope=snsapi_userinfo&state=1#wechat_redirect’  我们可以在state上做文章，因为state你传入什么微信那边返回什么

可以作为服务器与微信段的一个标识

public function creatqrAction(){

if($_GET['app']){
$wtoken=$_COOKIE['wtoken'];
$postdata=$_SESSION['w_state'];
if($wtoken){
$postdata=$wtoken;
}
<span style="color: #3366ff;">include CONFIG_PATH . 'phpqrcode/'.'phpqrcode.php';</span>
$sh=$this-&gt;shar1();
$value="https://open.weixin.qq.com/connect/oauth2/authorize?appid=wx138697ef383a9167&amp;redirect_uri=http://www.xxx.net/login/wcallback&amp;response_type=code&amp;scope=snsapi_userinfo&amp;state=".$postdata."&amp;connect_redirect=1#wechat_redirect";

$errorCorrectionLevel = "L";

$matrixPointSize = "5";

QRcode::png($value, false, $errorCorrectionLevel, $matrixPointSize);
}

}

此时生成了二维码 state是标识，phpqrcode可以在文章末尾下载,这样我们设置了回调地址http://www.xxx.net/login/wcallback

就可以在wcallback方法里面处理数据 插入用户 生成session，跳转登陆，pc端可以设置几秒钟ajax请求服务器，一旦获取到了

state,即实现调整，微信浏览器里处理完后可以关闭窗口,微信js可实现

document.addEventListener('WeixinJSBridgeReady', function onBridgeReady() {
WeixinJSBridge.call('closeWindow');

}, false);

也可以授权登陆成功后跳转到微信服务号关注页面

header("Location: weixin://profile/gh_a5e1959f9a4e");

wcallback方法做处理登陆

$code = $_GET['code'];
$state = $_GET['state'];
$setting = include CONFIG_PATH . 'setting.php';
$appid=$setting['weixin']['appid'];
$appsecret=$setting['weixin']['appsecret'];

if (empty($code)) $this->showMessage('授权失败');
try{

$token_url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$appid.'&secret='.$appsecret.'&code='.$code.'&grant_type=authorization_code';

$token = json_decode($this->https_request($token_url));

}catch(Exception $e)
{
print_r($e);
}

if (isset($token->errcode)) {
echo '<h1>错误：</h1>'.$token->errcode;
echo '<br/><h2>错误信息：</h2>'.$token->errmsg;
exit;
}

$access_token_url = 'https://api.weixin.qq.com/sns/oauth2/refresh_token?appid='.$appid.'&grant_type=refresh_token&refresh_token='.$token->refresh_token;
//转成对象
$access_token = json_decode($this->https_request($access_token_url));
if (isset($access_token->errcode)) {
echo '<h1>错误：</h1>'.$access_token->errcode;
echo '<br/><h2>错误信息：</h2>'.$access_token->errmsg;
exit;
}
$user_info_url = 'https://api.weixin.qq.com/sns/userinfo?access_token='.$access_token->access_token.'&openid='.$access_token->openid.'&lang=zh_CN';
//转成对象
$user_info = json_decode($this->https_request($user_info_url));
if (isset($user_info->errcode)) {
echo '<h1>错误：</h1>'.$user_info->errcode;
echo '<br/><h2>错误信息：</h2>'.$user_info->errmsg;
exit;
}
//打印用户信息
// echo '<pre>';
// print_r($user_info);
// echo '</pre>';

php soap扩展简单对象访问协议是交换数据的一种协议规范，是一种轻量的、简单的、基于XML（标准通用标记语言下的一个子集）的协议，它被设计成在WEB上交换结构化的和固化的信息，下面我们来看看小编整理的php soap扩展开启与__soapCall使用问题

例子

<?php

try {

      $client = new SoapClient("http://localhost:8080/Webtest/NewService?wsdl");

 

//    $result = $client->__soapCall("operation",array(4));//fault

//    $result = $client->__soapCall("operation",array("id"=>4));//fault

//    $result = $client->operation(4);//fault

    $result = $client->operation(array("id"=>4));//OK

 

    $back = json_encode($result);

    echo $back;

} catch (SoapFault $fault){

    echo "Error: ",$fault->faultcode,", string: ",$fault->faultstring;

}
?>
//仅有标记为OK的那行可以成功返回数字4，其它返回的都是数字0（参数应该是没有传过去，服务器端id初始是0）。

//手册里soapcall的例子：

<?php

$client = new SoapClient("some.wsdl");

$client->SomeFunction($a, $b, $c);

 

$client->__soapCall("SomeFunction", array($a, $b, $c));

$client->__soapCall("SomeFunction", array($a, $b, $c), NULL,

new SoapHeader(), $output_headers);

 

 

$client = new SoapClient(null, array('location' => "http://localhost/soap.php",

'uri' => "http://test-uri/"));

$client->SomeFunction($a, $b, $c);

$client->__soapCall("SomeFunction", array($a, $b, $c));

$client->__soapCall("SomeFunction", array($a, $b, $c),

array('soapaction' => 'some_action',

'uri' => 'some_uri'));

?>

本文我们来分享用php如何识别用户是通过 PC、iPad 还是手机，然后我们还可以看看腾讯的通过JS语句判断WEB网站的访问端是电脑还是手机。

先我们来看看一段用php如何识别用户是通过 PC、iPad 还是手机来访问网站？

<?php
$uAgent = $_SERVER['HTTP_USER_AGENT'];
$osPat = "mozilla|m3gate|winwap|openwave|Windows NT|Windows 3.1|95|Blackcomb|98|ME|XWindow|ubuntu|Longhorn|AIX|Linux|AmigaOS|BEOS|HP-UX|OpenBSD|FreeBSD|NetBSD|OS\/2|OSF1|SUN";
if(preg_match("/($osPat)/i", $uAgent ))
{
    echo "来着PC访问";
}
else
{
    echo "其他终端访问";
}
 
?>

以下是腾讯的通过JS语句判断WEB网站的访问端是电脑还是手机

腾讯网的适配代码
如何判断访问网站的机器类型-如何判断ipad
JS 判断浏览器客户端类型(ipad,iphone,android)

    <script type="text/javascript">
    <!--
            //平台、设备和操作系统
            var system = {
                win: false,
                mac: false,
                xll: false,
                ipad:false
            };
            //检测平台
            var p = navigator.platform;
            system.win = p.indexOf("Win") == 0;
            system.mac = p.indexOf("Mac") == 0;
            system.x11 = (p == "X11") || (p.indexOf("Linux") == 0);
            system.ipad = (navigator.userAgent.match(/iPad/i) != null)?true:false;
            //跳转语句，如果是手机访问就自动跳转到wap.baidu.com页面
            if (system.win || system.mac || system.xll||system.ipad) {
     
            } else {
     
                window.location.href = "http://www.jdpatro.com/3g/";
            }
    -->
    </script>

腾讯网的适配代码

    <script type="text/javascript">  
    if(/AppleWebKit.*Mobile/i.test(navigator.userAgent) || (/MIDP|SymbianOS|NOKIA|SAMSUNG|LG|NEC|TCL|Alcatel|BIRD|DBTEL|Dopod|PHILIPS|HAIER|LENOVO|MOT-|Nokia|SonyEricsson|SIE-|Amoi|ZTE/.test(navigator.userAgent))){
        if(window.location.href.indexOf("?mobile")<0){
            try{
                if(/Android|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)){
                    window.location.href="http://shipei.qq.com/index.htm";
                }else if(/iPad/i.test(navigator.userAgent)){
                }else{
                    window.location.href="http://shipei.qq.com/simple/s/index/"
                }
            }catch(e){}
        }
    }
    </script>

    <script type="text/javascript">
        var browser = {
            versions : function() {
                var u = navigator.userAgent, app = navigator.appVersion;
                return {//移动终端浏览器版本信息                                  
                trident : u.indexOf('Trident') > -1, //IE内核                                  
                presto : u.indexOf('Presto') > -1, //opera内核                                  
                webKit : u.indexOf('AppleWebKit') > -1, //苹果、谷歌内核                                  
                gecko : u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1, //火狐内核                                 
                mobile : !!u.match(/AppleWebKit.*Mobile.*/)
                        || !!u.match(/AppleWebKit/), //是否为移动终端                                  
                ios : !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios终端                  
                android : u.indexOf('Android') > -1 || u.indexOf('Linux') > -1, //android终端或者uc浏览器                                  
                iPhone : u.indexOf('iPhone') > -1 || u.indexOf('Mac') > -1, //是否为iPhone或者QQHD浏览器                     
                iPad: u.indexOf('iPad') > -1, //是否iPad        
                webApp : u.indexOf('Safari') == -1,//是否web应该程序，没有头部与底部
                google:u.indexOf('Chrome')>-1
            };
        }(),
        language : (navigator.browserLanguage || navigator.language).toLowerCase()
        }
        document.writeln("语言版本: "+browser.language);
        document.writeln(" 是否为移动终端: "+browser.versions.mobile);
    </script>

如何判断访问网站的机器类型-如何判断ipad

如何判断是否是 iPad 浏览器呢，关键是看它的 User Agent 中是否有 iPad。iPad 使用的是 Safari Mobile 浏览器，他的的 User Agent 是：

Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B334b Safari/531.21.10

function is_iPad(){        
 [object Object] [object Object] [object Object]var ua = navigator.userAgent.toLowerCase();
 [object Object] [object Object] [object Object]if(ua.match(/iPad/i)=="ipad") {                
 [object Object] [object Object] [object Object] [object Object] [object Object] [object Object]return true;
 [object Object] [object Object] [object Object]} else {
 [object Object] [object Object] [object Object] [object Object] [object Object] [object Object]return false;
 [object Object] [object Object] [object Object]}
}


$is_iPad = (bool) strpos($_SERVER['HTTP_USER_AGENT'],'iPad');

RewriteCond %{HTTP_USER_AGENT} ^.*iPad.*$
RewriteRule ^(.*)$ http://ipad.fairyfish.net [R=301]

JS 判断浏览器客户端类型(ipad,iphone,android)

    <script type="text/javascript">  
       var bForcepc
    = fGetQuery("dv") == "pc";   
       function
    fBrowserRedirect(){   
           var sUserAgent = navigator.userAgent.toLowerCase();  
           var bIsIpad = sUserAgent.match(/ipad/i) ==
    "ipad";    
           var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os";  
           var bIsMidp = sUserAgent.match(/midp/i) == "midp";  
           var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";  
           var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb";  
           var bIsAndroid = sUserAgent.match(/android/i) == "android";  
           var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce";  
           var bIsWM = sUserAgent.match(/windows mobile/i) == "windows
    mobile";   
           if(bIsIpad){   
               var sUrl =
    location.href;      
               if(!bForcepc){   
                   window.location.href = "http://ipad.mail.163.com/";  
               }   
           }   
           if(bIsIphoneOs || bIsAndroid){   
               var sUrl =
    location.href;      
               if(!bForcepc){   
                   window.location.href = "http://smart.mail.163.com/";  
               }   
           }   
           if(bIsMidp||bIsUc7||bIsUc||bIsCE||bIsWM){   
               var sUrl =
    location.href;      
               if(!bForcepc){   
                   window.location.href = "http://m.mail.163.com/";  
               }   
           }   
       }  
       function
    fGetQuery(name){//获取参数值   
           var sUrl = window.location.search.substr(1);  
           var r = sUrl.match(new RegExp("(^|&)" + name +
    "=([^&]*)(&|$)"));  
           return (r == null ? null : (r[2]));  
       }  
       function
    fShowVerBlock(){     
           if(bForcepc){   
               document.getElementByIdx_x("dv_block").style.display = "block";  
           }   
           else{   
               document.getElementByIdx_x("ad_block").style.display = "block";  
           }   
       }  
       fBrowserRedirect();   
       </script>

php本身对于多线程处理是不够理想的，但如果我们使用pthreads性能会有所提高了，下面来看一个PHP多线程pthreads使用例子

<?php
declare(ticks = 1);
$running = 1;
 
//信号处理函数
function sig_handler($signo)
{
  switch ($signo) {
  case SIGINT:
    finish();
    break;
  default:
    break;
  }
}
 
pcntl_signal(SIGINT, "sig_handler");
class test extends \Thread {
  public $url;
  public $result;
 
  public function __construct($url) {
    $this->url = $url;
  }
 
  public function run() {
    if ($this->url) {
      $this->result = model_http_curl_get($this->url);
    }
  }
}
function model_http_curl_get($url) {
  $curl = curl_init(); 
  curl_setopt($curl, CURLOPT_URL, $url); 
  curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); 
  curl_setopt($curl, CURLOPT_TIMEOUT, 5); 
  curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2)'); 
  $result = curl_exec($curl); 
  curl_close($curl); 
  return $result; 
}
for ($i = 0; $i < 500; $i++) {
  $urls[] = 'http://www.baidu.com/s?wd='. rand(10000, 20000);
}
 
$pool = array();
for ($i=1;$i<=5;$i++) {
  $key = uniqid();
  $url = array_shift($urls);
  $pool[$key] = new test($url);
  $pool[$key]->start();
  echo "启动线程$key\n";
}
while ($urls && $running) {
  foreach ($pool as $key=>$worker) {
    if(! $worker->isRunning()){
      //unset($pool[$key]);
      echo "线程".$key."已结束\n";
      $url = array_shift($urls);
      $pool[$key] = new test($url);
      $pool[$key]->start();
      echo "启动线程$key\n";
    }
  }
  usleep(1000);
}
 
function finish() {
  global $running;
  global $pool;
  $running = 0;
  echo "接收到信号，等待运行中线程结束\n";
  foreach ($pool as $key=>$worker) {
    if ($pool[$key]->join()) {
      var_dump($pool[$key]->result);
    }
  }
}