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sendStreamFile.php 把文件以流的形式发送；

receiveStreamFile.php 接收流文件并保存到本地。

sendStreamFile.php

<?php
/** php 发送流文件
* @param  String  $url  接收的路径
* @param  String  $file 要发送的文件
* @return boolean
*/
function sendStreamFile($url, $file){

    if(file_exists($file)){

        $opts = array(
            'http' => array(
                'method' => 'POST',
                'header' => 'content-type:application/x-www-form-urlencoded',
                'content' => file_get_contents($file)
            )
        );

        $context = stream_context_create($opts);
        $response = file_get_contents($url, false, $context);
        $ret = json_decode($response, true);
        return $ret['success'];

    }else{
        return false;
    }

}

$ret = sendStreamFile('http://localhost/fdipzone/receiveStreamFile.php', 'send.txt');
var_dump($ret);
?>

receiveStreamFile.php

<?php
/** php 接收流文件
* @param  String  $file 接收后保存的文件名
* @return boolean
*/
function receiveStreamFile($receiveFile){

    $streamData = isset($GLOBALS['HTTP_RAW_POST_DATA'])? $GLOBALS['HTTP_RAW_POST_DATA'] : '';

    if(empty($streamData)){
        $streamData = file_get_contents('php://input');
    }

    if($streamData!=''){
        $ret = file_put_contents($receiveFile, $streamData, true);
    }else{
        $ret = false;
    }

    return $ret;

}

$receiveFile = 'receive.txt';
$ret = receiveStreamFile($receiveFile);
echo json_encode(array('success'=>(bool)$ret));
?>