Using TwitterOauth within a function - php

Question

I am trying to create a small php script that pulls down a list of all user id's of people that are following/friends with a handle on twitter, for this I am using https://twitteroauth.com
I can get the id's to a file itself when I use either "friends" or "followers" individually, but when I am trying to move this script to a function I get "Fatal error: Call to a member function get() on null" (line 19)
the error is triggered because this line
" $tweets = $twitteroauth->get($type . '/ids', array ( 'screen_name' => $term, 'cursor' => $next_cursor, 'count' => 50));
"
is being used inside a function...
I used composer and tried and got it to work outside a function.. the 2 main files are
index.php
#!/usr/bin/php
<?php
require __DIR__ . '/vendor/autoload.php';
use Abraham\TwitterOAuth\TwitterOAuth;
require_once 'config.php';
// Pass in arguments
if (PHP_SAPI === 'cli') {
$type = $argv[1];
$term = $argv[2];
}
else {
$type = $_GET['type'];
$term = $_GET['term'];
}
switch ($type){
case 'timeline':
include 'timeline.php';
break;
case 'followers':
case 'friends':
include 'f.php';
break;
case 'ratelimit':
include 'ratelimit.php';
break;
case 'users_followers':
case 'users_friends':
include 'users.php';
break;
case 'all':
// include 'timeline.php';
include 'f.php';
break;
}
?>
And f.php
<?php
function getFrindsFollowers($term, $type){
// create file to print follwer/friends id's to file
$file = "files/" . $term . '_' . $type . '.csv';
// set empty content to file
$content = null;
// set previous cursor
$previous_cursor = 0;
$next_cursor = -1;
$loop_num = 0;
// While statment for followers or friends calls.
while($next_cursor != $previous_cursor && $loop_num < 15 && $next_cursor != 0){
//use Abraham\TwitterOAuth\TwitterOAuth;
//$twitteroauth = new TwitterOAuth(consumer_key, consumer_secret, oauth_access_token, oauth_access_token_secret);
$tweets = $twitteroauth->get($type . '/ids', array ( 'screen_name' => $term, 'cursor' => $next_cursor, 'count' => 50));
// Pause the loop for 16 min after every 15th request
if ($loop_num % 15 == 0 && $loop_num > 15) {
echo "sleep mode";
sleep(960);
echo "sleep mode done";
}
// set cursors
$previous_cursor = $next_cursor;
//echo 'Previous cursor is ' . $previous_cursor;
//echo '\n Next cursor is ' . $next_cursor;
foreach($tweets as $key => $val) {
if($key == "ids"){
//echo $val[0];
foreach($val as $value){
$value . "\n";
$content .= ",\n" . $value;
}
}
if($key == "next_cursor"){
//echo "\n \n";
$next_cursor = $val;
}
}
$loop_num ++;
echo "Type is now " . $type . "\n";
echo "Loop is " . $loop_num . " for " . $type . "\n";
file_put_contents($file, $content);
}
}
getFrindsFollowers($term, $type);
?>
Is most likely a easy fix but would appreciate any guidance on how to use a get request inside a function.

Answer 1

You are having trouble with scope (http://php.net/manual/en/language.variables.scope.php)
If you already have the twitteroauth variable defined outside the function, add this line at the start of it
global $twitteroauth;
This will give you access to the variable inside the function.