php iterate function help needed

cobusbo · March 13, 2015

Hi I'm currently connecting to a API to retrieve info. The info I'm retrieving is in the form of Std Class Object.

The problem I'm experiencing is that the results I get from one call is limited to 25. They say I should iterate it. But im not sure how to do so.

My code so far

<html> 
<?php 

require_once('MxitAPI.php'); 

try { 
$key = '************************'; 
$secret = '*****************************'; 

    $api = new MxitAPI($key, $secret); 

    if (isset($_GET) && isset($_GET['code'])) { 
$api->get_user_token($_GET['code'],       'http://********************'); 

        // Get Contacts 
        $contacts = $api->get_contact_list('@Friends', 0, 25); 
//print_r($contacts); 



foreach ($contacts->Contacts as $data) { 
    echo $data->DisplayName."<br>"; 
$invite = $data->UserId; 
$invite1 = $invite . ','; 









/* generate the message */  
$id = $_SERVER["HTTP_X_MXIT_USERID_R"]; 

$msg = "Hey! Come join me on {0}! And lets chat like a boss... :-P :-D";  
$link = array( array(  
'CreateTemporaryContact' => true,  
'TargetService' => '********',  
'Text' => '*****' )  
); 

/* send the message */  
$api->send_message($id, $invite1, $msg, 'true', $link); 



}  



    } elseif (isset($_GET) && isset($_GET['error']) && isset($_GET['error_description'])) { 
        echo "<h2>There was an error requesting access from the API</h2>"; 
        echo '<strong>Error:</strong> '. $_GET['error'] .'<br />'; 
        echo '<strong>Error Description:</string> '. $_GET['error_description'] .'<br />'; 
    } else { 
        $api->request_access('***********************', 'graph/read message/user'); 
    } 

} catch (Exception $e) { 
    echo $e->getMessage(); 
} 

?> 
<a href="page.php">Back</a>  
</html>

They say I should turn

$contacts = $api->get_contact_list('@Friends', 0, 25);

into a loop but not sure how to do so

the 0 is the files to skip and 25 is the amount to retrieve with each call.

they say

There is a default page limit of 26, so to access the user's complete contact list you will be iterate this call.

More info can be found here regarding the API im trying to use

with print_r option my object looks like

this is only the first 26 people info on my contact list I need to get a way to iterate it when the call is done with the first 26 to move on to the next 26. and then the next 26 etc.

I looked at $contacts = $api->get_contact_list('@Friends', 0, 25) and saw the 0 for skipped items and 25 for page limit. is there maybe a way to create a loop to say with the first call skip 0 with the second recall skip the first 25 and with 3rd recall skip the first 50 till its done...

Barand · March 13, 2015

pseudocode

start = 0
loop
    call get_contact_list() using start
    start += 25
    if no contacts returned
        exit loop
    end if
    process contacts
end loop

Edited March 13, 2015 by Barand

cobusbo · March 13, 2015

pseudocode

start = 0
loop
    call get_contact_list() using start
    start += 25
    if no contacts returned
        exit loop
    end if
    process contacts
end loop

HI Barand, I'm not sure this will work because the get contact list function look as follow

   /**
     *   Get the social graph information for a MXit user with the given UserId contained in the
     *   access token.
     * 
     *   Filters: @All, @Friends, @Apps, @Invites, @Connections (Default), @Rejected, @Pending, @Deleted, @Blocked
     *
     *   Url: http://api.mxit.com/user/socialgraph/contactlist?filter={FILTER}&skip={SKIP}&count={COUNT}
     *
     *   User Token Required
     *
     *   Required scope: graph/read
     *
     *   NOTE: You might expect count to return 2 items if you specify a value of 2, but it will return 3 items
     *         So you should treat the value similar to an array value, ie specify 1 if you want 2 results
     */
    public function get_contact_list($filter='', $skip=0, $count=0) {
        $this->_check_scope('get_contact_list', 'graph/read');
        $url = $this->_base_user_api_url ."socialgraph/contactlist";
        if ($filter != '')
            $url .= '?filter='. $filter;
        if ($skip != 0) {
            $url .= ($filter == '') ? '?' : '&';
            $url .= 'skip='. $skip;
        }
        if ($count != 0) {
            $url .= ($filter == '' && $skip == 0) ? '?' : '&';
            $url .= 'count='. $count;
        }
        $this->_api_headers();
        $this->_call_api($url, 'GET');
        return $this->result;

So as you can see in this case the 0 is the skipped contacts and count will be the maximum of 26 with each call I make

Barand · March 13, 2015

Needs a rewrite of the pseudocode in that case

skip = 0
loop
    call get_contact_list() using skip
    skip += 25
    if no contacts returned
        exit loop
    end if
process contacts
end loop

Is that better?

cobusbo · March 13, 2015

Needs a rewrite of the pseudocode in that case

skip = 0
loop
    call get_contact_list() using skip
    skip += 25
    if no contacts returned
        exit loop
    end if
process contacts
end loop

Is that better?

Ok so If I want to implement this into my code in the first post how would it look like? since im currently retrieving the contacts like this

foreach ($contacts->Contacts as $data) { 
    echo $data->DisplayName."<br>"; 
$invite = $data->UserId; 
$invite1 = $invite . ',';

I'm not sure how to implement it? And so I do not have to specify anything in the limit(count) above and what about the filter?

Edited March 13, 2015 by cobusbo

cobusbo · March 13, 2015

Ok so I tried this

$startat = 0; 
$getHowMany = 25; 
while($contacts = $api->get_contact_list('@Friends', $startat, $getHowMany) )  
{  
    $startat += $getHowMany; // advance starting point! 
    foreach ($contacts->Contacts as $data)  
    {  
         ... do whatever you need to do ... 
    } 
}

It seems to work but the only problem I got is that the function is slow. The app im using is giving me 10 seconds to get a response from my server and it seems like the loop takes longer. Is there a way to cleanup my code to make it more stable to save processioning time?

<html>
<?php

require_once('MxitAPI.php');

try {
$key = '11111111111111111111111111111111111';
$secret = '1111111111111111111111111111111111111';

    $api = new MxitAPI($key, $secret);

    if (isset($_GET) && isset($_GET['code'])) {
$api->get_user_token($_GET['code'],       'http://*******************/chat2/share.php');

        // Get Contacts
$startat = 0; 
$getHowMany = 25; 


        while($contacts = $api->get_contact_list('@Friends', $startat, $getHowMany) ) {
//print_r($contacts);
$startat += $getHowMany; // advance starting point! 


foreach ($contacts->Contacts as $data) {
    //echo $data->DisplayName."<br>";
$invite = $data->UserId;
$invite1 = $invite . ',';

echo "It worked";







/* generate the message */ 
$id = $_SERVER["HTTP_X_MXIT_USERID_R"];

$msg = "Hey! Come join me on {0}! And lets chat like a boss... :-P :-D"; 
$link = array( array( 
'CreateTemporaryContact' => true, 
'TargetService' => 'spamchat', 
'Text' => 'Spam Chat' ) 
);

/* send the message */ 
$api->send_message($id, $invite1, $msg, 'true', $link); 


} 
}
echo "It worked";

    } elseif (isset($_GET) && isset($_GET['error']) && isset($_GET['error_description'])) {
        echo "<h2>There was an error requesting access from the API</h2>";
        echo '<strong>Error:</strong> '. $_GET['error'] .'<br />';
        echo '<strong>Error Description:</string> '. $_GET['error_description'] .'<br />';
    } else {
        $api->request_access('************************', 'graph/read message/user');
    }

} catch (Exception $e) {
    echo $e->getMessage();
}

?>
<a href="page.php">Back</a> 
</html>

jcbones · March 14, 2015

It will be slow, especially if there are a lot of returns. Each call to the api function creates overhead. If you call it once, twice, thrice, there may never be a problem. You make that call ten times, you will notice it.

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php iterate function help needed

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