This page will show you how to send a Link Tracked Survey via the API..
<?php
    // Account details
    $apiKey = urlencode('Your apiKey');
    /**********************************
    Get List of Survey IDs on Account
    **********************************/
    // Prepare data for POST request
    $data = array('apikey' => $apiKey);
    // Send the POST request with cURL
    $ch = curl_init('https://api.txtlocal.com/get_surveys/');
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);
    curl_close($ch);
    // Process your response here
    echo $response;
    $responseArray = json_decode($response,true);
    /**********************************
    Get Details of specific survey on Account
    **********************************/
    // Survey details
    $survey_id = $responseArray[0]['id'];
    // Prepare data for POST request
    $data['survey_id'] = $survey_id;
    // Send the POST request with cURL
    $ch = curl_init('https://api.txtlocal.com/get_survey_details/');
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $surveyDetails = curl_exec($ch);
    curl_close($ch);
    $surveyDetailsArray = json_decode($surveyDetails,true);
    $surveyHex = $surveyDetailsArray['hex'];
    /**********************************
    Get specific contact information
    **********************************/
    // Prepare data for POST request
    unset($data['survey_id']);
    $data['group_id'] = 123456;
    $data['number'] = 447123456789;
    // Send the POST request with cURL
    $ch = curl_init('https://api.txtlocal.com/get_contacts/');
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $contactInformation = curl_exec($ch);
    curl_close($ch);
    $contactInformationArray = json_decode($contactInformation, true);
    $contactLinkTracking = $contactInformationArray['contact']['linkTracking'];
    $surveyLinkTrackURL = "https://api.txtlocal.com/{$surveyHex}/{$contactLinkTracking}";
    /**********************************
    Send SMS
    **********************************/
    // Message details
    $number = $data['number'];
    $sender = urlencode('Jims Autos');
    $message = rawurlencode('Please fill out this survey' . $surveyLinkTrackURL);
    // Prepare data for POST request
    $data = array('apikey' => $apiKey, 'numbers' => $number, "sender" => $sender, "message" => $message);
    // Send the POST request with cURL
    $ch = curl_init('https://api.txtlocal.com/send/');
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);
    curl_close($ch);
    // Process your response here
    echo $response;
?><?php
    // Account details
    $apiKey = urlencode('Your apiKey');
    // Prepare data for POST request
    $data = $apiKey;
    /**********************************
    Get List of Survey IDs on Account
     **********************************/
    // Send the POST request with cURL
    $ch = curl_init('https://api.txtlocal.com/get_surveys/' . $data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);
    curl_close($ch);
    // Process your response here
    echo $response;
    $responseArray = json_decode($response,true);
    /**********************************
    Get Details of specific survey on Account
     **********************************/
    // Survey details
    $survey_id = $responseArray[0]['id'];
    // Prepare data for POST request
    $data['survey_id'] = $survey_id;
    // Send the POST request with cURL
    $ch = curl_init('https://api.txtlocal.com/get_survey_details/'  . http_build_query($data));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $surveyDetails = curl_exec($ch);
    curl_close($ch);
    $surveyDetailsArray = json_decode($surveyDetails,true);
    $surveyHex = $surveyDetailsArray['hex'];
    /**********************************
    Get specific contact information
     **********************************/
    // Prepare data for POST request
    unset($data['survey_id']);
    $data['group_id'] = 123456;
    $data['number'] = 447123456789;
        // Send the POST request with cURL
    $ch = curl_init('https://api.txtlocal.com/get_contacts/' . http_build_query($data));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $contactInformation = curl_exec($ch);
    curl_close($ch);
    $contactInformationArray = json_decode($contactInformation, true);
    $contactLinkTracking = $contactInformationArray['contact']['linkTracking'];
    $surveyLinkTrackURL = "https://api.txtlocal.com/{$surveyHex}/{$contactLinkTracking}";
    /**********************************
    Send SMS
     **********************************/
    // Message details
    $number = $data['number'];
    $sender = urlencode('Jims Autos');
    $message = rawurlencode('Please fill out this survey' . $surveyLinkTrackURL);
    // Prepare data for POST request
    $sendData = array('apikey' => $apiKey, 'numbers' => $number, "sender" => $sender, "message" => $message);
    // Send the POST request with cURL
    $ch = curl_init('https://api.txtlocal.com/send/' . http_build_query($sendData));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);
    curl_close($ch);
    // Process your response here
    echo $response;
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