PHP Fatal error: Call to undefined function how do I fix it?

Question

I've very new to PHP and am trying to get API (REST) to work with a site I'm currently working on. It works if I submit a form using AJAX but I want it to work without using AJAX. The code I'm using is:

<?php

$postContactUrl = 'https://apiconnector.com/v2/contacts/';
$data = array(
    'Email' => $_POST['email'],
    'EmailType' => 'Html',
    'dataFields' => array(
        array(
            'Key' => 'FULLNAME',
            'Value' => $_POST['name_first'] . " " . $_POST['name_last']
        ),
    )
);
$contact = execute_post($postContactUrl, $data);

$addContactToAddressBookUrl = 'https://apiconnector.com/v2/address-books/' . '123456' . '/contacts';
$book = execute_post($addContactToAddressBookUrl, $contact);

function execute_post($url, $data)
{
    $requestBody = json_encode($data, true);

    $ch = curl_init();

    curl_setopt($ch, CURLAUTH_BASIC, CURLAUTH_DIGEST);
    curl_setopt($ch, CURLOPT_USERPWD, 'username' . ':' . 'password');
    curl_setopt($ch, CURLOPT_POSTFIELDS, $requestBody);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, 10);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: ' . 'application/json', 'Content-Type: application/json'));

    $responseBody = json_decode(curl_exec($ch));

    curl_close($ch);

    return $responseBody;
}

but when I try to add that to the page the form is on I get this error:

PHP Fatal error: Call to undefined function execute_post()

I've tried to fix it but nothing I do seems to work. I don't understand why it works with AJAX but not any other way.

Ahmet ATAK · Accepted Answer · 2015-04-27 15:10:23Z

2

your function should be before your calling function method

function execute_post(){
}

    $contact = execute_post($postContactUrl, $data);

answered Apr 27, 2015 at 15:10

Ahmet ATAK

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4 Comments

Dan Over a year ago

In PHP, you can call a function before defining it. That should not be the problem here.

Ahmet ATAK Over a year ago

it is same for all language echo lib(); anthen you cannot write function function should be installed before calling. you can test it by yoursef wirte a function in another php file call the function and include below the calling function

noobie_woobie Over a year ago

I did try that and although it then didn't throw any errors it didn't work either.

noobie_woobie Over a year ago

Does anybody have any suggestions? I'm desperate to get this to work

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