PHP stream_context_create()作用和用法分析
作者:bea
作用:创建并返回一个文本数据流并应用各种选项,可用于fopen(),file_get_contents()等过程的超时设置、代理服务器、请求方式、头信息设置的特殊过程。 函数原型:resource stream_context_create ([ array $options [, array $params ]] ) 用法 例子一: 代码如下: <?php $opts = array( 'http-->array( 'method'=>"GET"
作用:创建并返回一个文本数据流并应用各种选项,可用于fopen(),file_get_contents()等过程的超时设置、代理服务器、请求方式、头信息设置的特殊过程。
函数原型:resource stream_context_create ([ array $options [, array $params ]] )
用法
例子一:
代码如下:
<?php
$opts = array( 'http-->array(
'method'=>"GET",
'header'=>"Accept-language: en
" .
"Cookie: foo=bar
"
)
);
$context = stream_context_create($opts);
/* Sends an http request to
with additional headers shown above */
$fp = fopen('http://', 'r', false, $context);
fpassthru($fp);
fclose($fp);
?>
例子二:
代码如下:
<?php
$opts = array( 'http-->array(
'method'=>"GET",
'header'=>"Accept-language: en
" .
"Cookie: foo=bar
"
)
);
$context = stream_context_create($opts);
?>
You would setup the header this way:
<?php
$opts = array( 'http-->array(
'method'=>"GET",
'header'=>array("Accept-language: en",
"Cookie: foo=bar",
"Custom-Header: value")
)
);
$context = stream_context_create($opts);
?>
例子三:
代码如下:
<?php
$opts = array('http' => array('proxy' => 'tcp://127.0.0.1:8080', 'request_fulluri' => true));
$context = stream_context_create($opts);
$data = file_get_contents('http://', false, $context);
echo $data;
?>
例子四:
代码如下:
<?php
function do_post_request($url, $postdata, $files = null)
{
$data = "";
$boundary = "---------------------".substr(md5(rand(0,32000)), 0, 10);
//Collect Postdata
foreach($postdata as $key => $val)
{
$data .= "--$boundary
";
$data .= "Content-Disposition: form-data; name="".$key.""
".$val."
";
}
$data .= "--$boundary
";
//Collect Filedata
foreach($files as $key => $file)
{
$fileContents = file_get_contents($file['tmp_name']);
$data .= "Content-Disposition: form-data; name="{$key}"; filename="{$file['name']}"
";
$data .= "Content-Type: image/jpeg
";
$data .= "Content-Transfer-Encoding: binary
";
$data .= $fileContents."
";
$data .= "--$boundary--
";
}
$params = array('http' => array(
'method' => 'POST',
'header' => 'Content-Type: multipart/form-data; boundary='.$boundary,
'content' => $data
));
$ctx = stream_context_create($params);
$fp = fopen($url, 'rb', false, $ctx);
if (!$fp) {
throw new Exception("Problem with $url, $php_errormsg");
}
$response = @stream_get_contents($fp);
if ($response === false) {
throw new Exception("Problem reading data from $url, $php_errormsg");
}
return $response;
}
//set data (in this example from post)
//sample data
$postdata = array(
'name' => $_POST['name'],
'age' => $_POST['age'],
'sex' => $_POST['sex']
);
//sample image
$files['image'] = $_FILES['image'];
do_post_request("http://", $postdata, $files);
?>
有用 | 无用
函数原型:resource stream_context_create ([ array $options [, array $params ]] )
用法
例子一:
代码如下:
<?php
$opts = array( 'http-->array(
'method'=>"GET",
'header'=>"Accept-language: en
" .
"Cookie: foo=bar
"
)
);
$context = stream_context_create($opts);
/* Sends an http request to
with additional headers shown above */
$fp = fopen('http://', 'r', false, $context);
fpassthru($fp);
fclose($fp);
?>
例子二:
代码如下:
<?php
$opts = array( 'http-->array(
'method'=>"GET",
'header'=>"Accept-language: en
" .
"Cookie: foo=bar
"
)
);
$context = stream_context_create($opts);
?>
You would setup the header this way:
<?php
$opts = array( 'http-->array(
'method'=>"GET",
'header'=>array("Accept-language: en",
"Cookie: foo=bar",
"Custom-Header: value")
)
);
$context = stream_context_create($opts);
?>
例子三:
代码如下:
<?php
$opts = array('http' => array('proxy' => 'tcp://127.0.0.1:8080', 'request_fulluri' => true));
$context = stream_context_create($opts);
$data = file_get_contents('http://', false, $context);
echo $data;
?>
例子四:
代码如下:
<?php
function do_post_request($url, $postdata, $files = null)
{
$data = "";
$boundary = "---------------------".substr(md5(rand(0,32000)), 0, 10);
//Collect Postdata
foreach($postdata as $key => $val)
{
$data .= "--$boundary
";
$data .= "Content-Disposition: form-data; name="".$key.""
".$val."
";
}
$data .= "--$boundary
";
//Collect Filedata
foreach($files as $key => $file)
{
$fileContents = file_get_contents($file['tmp_name']);
$data .= "Content-Disposition: form-data; name="{$key}"; filename="{$file['name']}"
";
$data .= "Content-Type: image/jpeg
";
$data .= "Content-Transfer-Encoding: binary
";
$data .= $fileContents."
";
$data .= "--$boundary--
";
}
$params = array('http' => array(
'method' => 'POST',
'header' => 'Content-Type: multipart/form-data; boundary='.$boundary,
'content' => $data
));
$ctx = stream_context_create($params);
$fp = fopen($url, 'rb', false, $ctx);
if (!$fp) {
throw new Exception("Problem with $url, $php_errormsg");
}
$response = @stream_get_contents($fp);
if ($response === false) {
throw new Exception("Problem reading data from $url, $php_errormsg");
}
return $response;
}
//set data (in this example from post)
//sample data
$postdata = array(
'name' => $_POST['name'],
'age' => $_POST['age'],
'sex' => $_POST['sex']
);
//sample image
$files['image'] = $_FILES['image'];
do_post_request("http://", $postdata, $files);
?>
有用 | 无用
猜你喜欢
您可能感兴趣的文章:
- PHP学习之正则表达式
- PHP学习之字符串比较和查找
- PHP学习之整理字符串
- PHP学习之输出字符串(echo,print,printf,print_r和var_dump)
- php 生成文字png图片的代码
- 适用于php-5.2 的 php.ini 中文版[金步国翻译]
- php编写一个简单的路由类
- php 求质素(素数) 的实现代码
- php 5.3.5安装memcache注意事项小结
- php处理json时中文问题的解决方法
- php 面向对象的一个例子
- 深入理解PHP原理之Session Gc的一个小概率Notice
- php表单提交问题的解决方法
- 使用NetBeans + Xdebug调试PHP程序的方法
- php产生随机数的两种方法实例代码 输出随机IP
- PHP随机数生成代码与使用实例分析
- PHP的cURL库功能简介 抓取网页、POST数据及其他
- php curl 登录163邮箱并抓取邮箱好友列表的代码(经测试)
- The specified CGI application misbehaved by not returning a complete set of HTTP headers