PHP中CURL的几个经典应用实例

<?php
    //1、初始化
    $ch = curl_init();

    //2、设置选项，包括URL
    curl_setopt($ch, CURLOPT_URL, "http://www.cnblogs.com/it-cen/");

    //将curl_exec()获取的信息以文件流的形式返回，而不是直接输出
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    //启动时会将头文件的信息作为数据流输出
    curl_setopt($ch, CURLOPT_HEADER, 1);

    //3、执行并获取HTML文档内容
    curl_exec($ch);

    //4、释放句柄
    curl_close($ch);

    echo $ch;

?>

$output = curl_exec($ch);
 
     if ($output === false) {
         echo "cURL Error:".curl_error($ch);
     }

 curl_exec($ch);
     $info = curl_getinfo($ch);
     echo '<pre>';
     print_r($info);   
     echo '</pre>';

Array
(
    [url] => http://www.cnblogs.com/it-cen/
    [content_type] => text/html; charset=utf-8
    [http_code] => 200
    [header_size] => 312
    [request_size] => 61
    [filetime] => -1
    [ssl_verify_result] => 0
    [redirect_count] => 0
    [total_time] => 0.172
    [namelookup_time] => 0.016
    [connect_time] => 0.063
    [pretransfer_time] => 0.063
    [size_upload] => 0
    [size_download] => 14658　　　　　<span style="color: #ff0000;">　//请求的数据大小</span>
    [speed_download] => 85220　　　　
    [speed_upload] => 0
    [download_content_length] => 14658
    [upload_content_length] => 0
    [starttransfer_time] => 0.125
    [redirect_time] => 0
    [certinfo] => Array
        (
        )
 
    [redirect_url] =>
)

 <?php
    header("Content-Type: image/png");

    //1、初始化
    $ch = curl_init();

    //2、设置选项，包括URL
    curl_setopt($ch, , CURLOPT_URL, "http://img04.taobaocdn.com/tfscom/TB1omaTHXXXXXajXVXXtKXbFXXX.png");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_HEADER, 1)；

    //3、执行并获取内容
    $res = curl_exec($ch);

    //获取信息
    $info = curl_getinfo($ch);

    //4、释放资源
    curl_close($ch);

    file_put_contents("d:/aa.png", $res);

    $size = filesize("d:/aa.png");

    if ($size != $info['size_download']) {
        echo "下载的数据不完整，请重新下载";
    } else {
        echo "下载数据完整";
    }

?>
 

 <?php
    $ch = curl_init();

    $data = array('name'=>'kelly', 'age'=>27, 'sex'=>1);

    curl_setopt($ch, CURLOPT_URL, "http://localhost.post.php");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    //设置为post
    curl_setopt($ch, CURLOPT_POST, 1);
    //把post的变量加上
    curl_setopt($ch, CURLOPT_POSTFIELDS,$data);

    $res = curl_exec($ch);

    curl_close($ch);

    echo $res;

?>
 

<?php
    //索要上传的数据
    $data = array('name'=>'beauty', "upload"=>"@a.zip");

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, "http://127.0.0.1/Socket/upload_file.php");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

    $res = curl_exec($ch);

    curl_close($ch);

    echo $res;

?>