php curl配置以及使用

### 配置方法：

1、将文件
- php_curl.dll
- libeay32.dll
- ssleay32.dll
- php5ts.dll

复制到 `%windir%/system32` 以及php 目录的 `ext` 目录下，并且找到`php.ini`（phpinfo里显示的那个php.ini文件），修改了 `extension=php_curl.dll` 并把前面的分号去掉，然后重起APACHE / IIS
这些DLL 5.2.4PHP版本可以在这里找下载：[http://www.blueidea.com/tech/program/2010/7348.asp](http://www.blueidea.com/tech/program/2010/7348.asp "http://www.blueidea.com/tech/program/2010/7348.asp") 
 
### 实用方法：
1、简单使用

// 1. 初始化
    $ch = curl_init();
    
    // 2. 设置选项，包括URL
    curl_setopt($ch, CURLOPT_URL, "http://www.163.com");//http://localhost:7020/del.php?menu=test
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    
    // 3. 执行并获取HTML文档内容
    $output = curl_exec($ch);
    echo $output;
    if ($output === FALSE) {
    echo "cURL Error: " . curl_error($ch);//检测错误
    }
    
    //打印抓取信息数组
    $info = curl_getinfo($ch);
    foreach($info as $a=>$b)
    {
    echo $a."--".$b."<br/>";
    }
    
    // 4. 释放curl句柄
    curl_close($ch);

2、修改heade头

// 测试用的URL
    $urls = array(
    	"http://www.cnn.com",
    	"http://www.mozilla.com"
    );
    //,"http://www.facebook.com"
    // 测试用的浏览器信息
    $browsers = array(
    	"standard" => array (
    		"user_agent" => "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6 (.NET CLR 3.5.30729)",
    		"language" => "en-us,en;q=0.5"
    	),
    	"iphone" => array (
    		"user_agent" => "Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/1A537a Safari/419.3",
    		"language" => "en"
    	),
    	"french" => array (
    		"user_agent" => "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB6; .NET CLR 2.0.50727)",
    		"language" => "fr,fr-FR;q=0.5"
    	)
    );
    foreach ($urls as $url) {
    	echo "URL: $url<br/>";
    	foreach ($browsers as $test_name => $browser) {
    		$ch = curl_init();
    		// 设置 url
    		curl_setopt($ch, CURLOPT_URL, $url);
    		// 设置浏览器的特定header
    		curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    			"User-Agent: {$browser['user_agent']}",
    			"Accept-Language: {$browser['language']}"
    		)
    	);
    	// 页面内容我们并不需要
    	curl_setopt($ch, CURLOPT_NOBODY, 1);
    	// 只需返回HTTP header
    	curl_setopt($ch, CURLOPT_HEADER, 1);
    	// 返回结果，而不是输出它
    	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    	$output = curl_exec($ch);
    	curl_close($ch);
    	// 有重定向的HTTP头信息吗?
    	if (preg_match("!Location: (.*)!", $output, $matches)) {
    		echo "$test_name: redirects to $matches[1]<br/>";
    	} else {
    		echo "$test_name: no redirection<br/>";
    	}
    }
    echo "\n\n";
    }

3、POST数据

$url = "http://localhost:7020/del.php?menu=getpost";
    $post_data = array (
    	"foo" => "bar",
    	"query" => "Nettuts",
    	"action" => "Submit"
    );
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    // 我们在POST数据哦！
    curl_setopt($ch, CURLOPT_POST, 1);
    // 把post的变量加上
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
    $output = curl_exec($ch);
    curl_close($ch);
    echo $output;

4、文件上传

$url = "http://localhost:7020/del.php?menu=getfile";
    $post_data = array (
    	"foo" => "bar",
    	// 要上传的本地文件地址
    	"upload" => "@C:/1.txt"
    );
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
    $output = curl_exec($ch);
    curl_close($ch);
    echo $output;

5、同时处理多个curl

// 创建两个cURL资源
    $ch1 = curl_init();
    $ch2 = curl_init();
    // 指定URL和适当的参数
    curl_setopt($ch1, CURLOPT_URL, "http://www.baidu.com");
    curl_setopt($ch1, CURLOPT_HEADER, 0);
    curl_setopt($ch2, CURLOPT_URL, "http://www.php.net/");
    curl_setopt($ch2, CURLOPT_HEADER, 0);
    // 创建cURL批处理句柄
    $mh = curl_multi_init();
    // 加上前面两个资源句柄
    curl_multi_add_handle($mh,$ch1);
    curl_multi_add_handle($mh,$ch2);
    // 预定义一个状态变量
    $active = null;
    // 执行批处理
    do {
    	$mrc = curl_multi_exec($mh, $active);
    } while ($mrc == CURLM_CALL_MULTI_PERFORM);
    
    while ($active && $mrc == CURLM_OK) {
    	if (curl_multi_select($mh) != -1) {
    		do {
    			$mrc = curl_multi_exec($mh, $active);
    		} while ($mrc == CURLM_CALL_MULTI_PERFORM);
    	}
    }
    // 关闭各个句柄
    curl_multi_remove_handle($mh, $ch1);
    curl_multi_remove_handle($mh, $ch2);
    curl_multi_close($mh);

6、模拟登录

function vlogin($url,$request){
    	$cookie_jar = tempnam('./tmp','cookie');//在当前目录下生成一个随机文件名的临时文件
    	$ch = curl_init($url); //初始化curl模块
    	curl_setopt($ch, CURLOPT_HEADER, 0);
    	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    	curl_setopt($ch, CURLOPT_POST, 1);//post方式提交
    	curl_setopt($ch, CURLOPT_POSTFIELDS, $request);//要提交的内容
    	//把返回$cookie_jar来的cookie信息保存在$cookie_jar文件中
    	curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);
    	$xianshi=curl_exec ($ch);
    	curl_close($ch); //get data after login
    	$curl="http://jwc.ecjtu.jx.cn/mis_o/query.php";
    	$ch=curl_init($curl);
    	curl_setopt($ch, CURLOPT_HEADER, 0);
    	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    	curl_setopt($ch, CURLOPT_POST, 1);
    	curl_setopt($ch, CURLOPT_POSTFIELDS, "StuID=20102110130309&Term=2012.1");
    	curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);
    	$xianshi=curl_exec($ch);
    	curl_close($ch);
    	return $xianshi;
    }
    $url="http://jwc.ecjtu.jx.cn/mis_o/login.php";//这个是我们学校教务处的网站，也就是我要爬的网站地址文件。
    $request="user=用户名&pass=密码&Submit=提交";
    echo vlogin($url, $request)

Search result.

php 获得指定日期所在星期的天数

GD2类库与jpgraph类库