Attempting to process the first API call from Client

Let say client side making the first call the my API . How I process the first API call? How should I intercept the http://www.mycom.com/api/GET?name=simple call inside api.php?

client.php

    <?php 
$ch = curl_init();
$url = 'http://www.mycom.com/api/GET?name=simple';
curl_setopt($ch, CURLOPT_GET, true);
curl_setopt($ch, CURLOPT_URL, $url);
$json = curl_exec($ch);
echo "\n".$json."\n";

 ?> 

api.php what's inside?

<?php开发者_StackOverflow中文版

?>

try adding the following to your .htaccess file

RewriteEngine On
RewriteRule ^api/([a-zA-Z]+) api.php?mode=$1 [QSA]

when a client calls "api/GET?name=simple" this would be the same as "api.php?mode=GET&name=simple".

I think that you mean the client deal with: http://www.mycom.com/api.php?name=simple

then, the standard way is to make deal with the client, like to tell hem that the first api call must say that it is the first: http://www.mycom.com/api.php?name=simple&first

then you can know the first call in api.php

if (isset($_GET['first'])){
    // first call
} else {
    // not first call
}

otherwise, if you don't trust user (client), and think that he may do some bad things, you can know that it was the first api call by his IP.