Discussing PHP Frameworks: What, When, Why and Which? – Noupe Design Blog

How to use curl_multi() without blocking

A more efficient implementation of curl_multi()
curl_multi is a great way to process multiple HTTP requests in parallel in PHP. curl_multi is particularly handy when working with large data sets (like fetching thousands of RSS feeds at one time). Unfortunately there is very little documentation on the best way to implement curl_multi. As a result, most of the examples around the web are either inefficient or fail entirely when asked to handle more than a few hundred requests.

【Ｐ】PHPDoctor – 產生程式文件的好工具 @ My Life :: 隨意窩 Xuite日誌

這是一套產生 PHP 程式文件的好東西~

上次經由會議上，聽到小鳳介紹後，一直到了昨天才開始研究~

我就先到了 PHPDoctor 去下載程式。

然後放到可以執行 PHP 環境的Server上。

http://peej.github.com/phpdoctor/more.html

這裡有詳細的說明該 如何安裝設定及使用。

首先我將 phpdoctor 目錄裡的default.ini 複制一份來修改。

改的地方不多，應該說我看不懂的地方太多~哈~

附上我的設定檔 www.ini 的內容，

裡面我把我沒用到的都刪掉了~

libcurl – PHP Binding examples

PHP/CURL Examples Collection

FQstory: PHP CURL 發送 GET 和 POST 語法

如果要連到連的網址的話
許多免費空間不支援FOPEN
大家可以使用CURL試試看

PHP CURL

1、http的get傳送

$ch = curl_init(“/") ;
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true) ;
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true) ;
$output = curl_exec($ch) ;
$fh = fopen(“out.html", ‘w’) ;
fwrite($fh, $output) ;
fclose($fh) ;

2、http的post傳送

EX1

$URL="www.mysite.com/test.php";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,"https://$URL");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, “Data1=blah&Data2=blah");curl_exec ($ch);
curl_close ($ch);

EX2

//extract data from the post
extract($_POST) ;
//set POST variables
$url = ‘/get-post.php’ ;
$fields = array(
‘lname’=>urlencode($last_name) ,
‘fname’=>urlencode($first_name) ,
‘title’=>urlencode($title) ,
‘company’=>urlencode($institution) ,
‘age’=>urlencode($age) ,
’email’=>urlencode($email) ,
‘phone’=>urlencode($phone)
);
//url-ify the data for the POST
foreach($fields as $key=>$value) { $fields_string .= $key.’=’.$value.’&’ ; }
rtrim($fields_string ,’&’) ;
//open connection
$ch = curl_init() ;
//set the url, number of POST vars, POST data
curl_setopt($ch, CURLOPT_URL,$url) ;
curl_setopt($ch, CURLOPT_POST,count($fields)) ;
curl_setopt($ch, CURLOPT_POSTFIELDS,$fields_string) ;
//execute post
$result = curl_exec($ch) ;
//close connection
curl_close($ch) ;

PHP CURL 教學 | InspireGate 派克空間

 最完整的CURL中文說明，學PHP的要好好掌握，有很多的參數，大部份都很有用，真正掌握了它和正則,一定就是個採集高手了。

Executing multiple curl requests in parallel with PHP and curl_multi_exec | Rusty Razor Blade

Let’s get one thing out in the open. Curl is sweet. It does it’s job very well, and I’m absoutely thrilled it exists.

If you’re using curl in your PHP app to make web requests, you’ve probably realized that by doing them one after the other, the total time of your request is the sum of all the requests put together. That’s lame.

Unfortunately using the curl_multi_exec is poorly documented in the PHP manual.

Let’s say that your app is hitting APIs from these servers:

Google: .1s
Microsoft: .3s
rustyrazorblade.com: .5s

Your total time will be .9s, just for api calls.

By using curl_multi_exec, you can execute those requests in parallel, and you’ll only be limited by the slowest request, which is about .5 sec to rustyrazorblade in this case, assuming your download bandwidth is not slowing you down.

Sample code:

$nodes = array(‘http://www.google.com’, ‘http://www.microsoft.com’, ‘http://www.rustyrazorblade.com’);
$node_count = count($nodes);

$curl_arr = array();
$master = curl_multi_init();

for($i = 0; $i < $node_count; $i++)
{
$url =$nodes[$i];
$curl_arr[$i] = curl_init($url);
curl_setopt($curl_arr[$i], CURLOPT_RETURNTRANSFER, true);
curl_multi_add_handle($master, $curl_arr[$i]);
}

do {
curl_multi_exec($master,$running);
} while($running > 0);

echo “results: “;
for($i = 0; $i < $node_count; $i++)
{
$results = curl_multi_getcontent ( $curl_arr[$i] );
echo( $i . “\n" . $results . “\n");
}
echo ‘done’;

It’s really not documented on php.net how to use curl_multi_getcontent, so hopefully this helps someone.