PHP - Need Guidance On Using Classes

I've been spending long hours learning about classes and their magic methods. I just came across a tutorial which showed a constructor like this:

class Device {
    //...
    public function  __construct(Battery $battery, $name) {
        // $battery can only be a valid Battery object
        $this->battery = $battery;
        $this->name = $name;
        // connect to the network
        $this->connect();
    }
    //...
}

the Battery part instantly caught my attention. Here had previously made a Battery class (and a more complete Device class) but the next thing he did really caught my interest:

$device = new Device(new Battery(), 'iMagic');
// iMagic connected
echo $device->name;
// iMagic

what the hell is going on here? Is this another way to include the methods and properties of one class into another class, in order words is this the same thing as:

class Device extends Battery

I don't think so because this new Battery() thing looks more like its creating an object inside the Device object. Previously the only way I could to that was to type $battery = new Battery() inside one of my methods. But this looks like hes doing something different. Can anyone explain whats going on here?   The whole tutorial is he http://code.tutsplus...-php--net-13085 in the main Device method he has a premade $battery variable to hold the Battery object. Sometimes I have multiple classes containing functions which I'd like to include in my main class. I can only extend one class, so I usually extent a class containing only properties, no methods. I still don't know what difference making that info class abstract is, I'd appreciate if anyone could tell me.   Also I'd love to know what the point in static methods is. I've never used them because I've never seen the point. Is it just to make it easier to call the methods because you don't need to create an object instance to call them? Sorry for the extra questions, the first one is what I'm really wondering about.    

It's always these seemingly simple tasks that become challenges.

I got a good handle on how to watermark some photos (thanks to respondents to my previous post) and developed a script that calls a function that uses imagettftext()

Essentially, I can upload multiple images and watermark them before they reach their destination folder.

Good stuff.

Now, I got this crazy idea of watermarking them with a sequence number, so that if I grab 12 images, each will be labeled with it's sequence number (rather than a standard text watermark).

I placed $count++ in my script, and then used $count as my $watermark both inside imagettftext and as a variable.

It didn't work.

The closest I got was after placing $count++ inside a watermark function, but. of course, that merely labeled each photo with a "1" (bc each call of the function was a new iteration. 

Can someone please offer some direction here.

Thanks.

 

I have created a script that will upload and reminder images.
Currently, the script gives each image a common name (myPhotoSample) and a timestamp.

Now, I want to replace the timestamp with a number so that each image is listed sequentially with more easily recognized values (1,2,3,etc).

My concern is the effect this could have if several uploads were coincidentally started simultaneously.

I doubt the script (or directory) would allow duplicate names to be rendered, so would I lose files because of overwriting?

If 3 uploads of 10 images each were all started at exactly midnight what could go wrong? How can I best resolve the risk and ensure that I get 30 complete files sequentially numbered?
 

Hello:

I am very new to PHP. I have done a few basic feedback forms, but that's it.

I have done Classic ASP for years, and am trying to switch over to PHP.

I wanted to see what it would take to make a basic CMS that would allow users to update page content from an admin panel.

Very much like the attached .JPG demo.

Is there existing code available like what I'm trying to do?

I can post the ASP version code if it will help.

I assume it would need a database, but I have only used DNS-less connections with Access - not anything PHP related.

I know the site is hosted on justhost.com, and justhost.com uses unix servers.

Any assistance would be appreciated!

Hi guys,

I need some help from you pro's please with converting code from a TPL template file to PHP.

My client has payment gateway scripts in an ecommerce site that he wants to offer to other merchants.  The code currently is in numerous TPL files (currently being used in Opencart).

What is involved in converting to plain ol' PHP?  Do I need the TPL files at all?  Can I rename the TPL extension to PHP as it looks like they contain PHP code??


Example of one of the TPL's is below:

 
<form action="<?php echo $action; ?>" method="post" id="checkout">
  <input type="hidden" name="instId" value="<?php echo $merchant; ?>" />
  <input type="hidden" name="cartId" value="<?php echo $order_id; ?>" />
  <input type="hidden" name="amount" value="<?php echo $amount; ?>" />
  <input type="hidden" name="currency" value="<?php echo $currency; ?>" />
  <input type="hidden" name="desc" value="<?php echo $description; ?>" />
  <input type="hidden" name="name" value="<?php echo $name; ?>" />
  <input type="hidden" name="address" value="<?php echo $address; ?>" />
  <input type="hidden" name="postcode" value="<?php echo $postcode; ?>" />
  <input type="hidden" name="country" value="<?php echo $country; ?>" />
  <input type="hidden" name="tel" value="<?php echo $telephone; ?>" />
  <input type="hidden" name="email" value="<?php echo $email; ?>" />
  <input type="hidden" name="testMode" value="<?php echo $test; ?>" />
</form>
<div class="buttons">
  <table>
    <tr>
      <td align="left"><a onclick="location = '<?php echo $back; ?>'" class="button"><span><?php echo $button_back; ?></span></a></td>
      <td align="right"><a onclick="$('#checkout').submit();" class="button"><span><?php echo $button_confirm; ?></span></a></td>
    </tr>
  </table>
</div>


I also have 3 PHP files as well, which look like (example):

<?php
class ControllerPaymentOnlineVoucher extends Controller {
protected function index() {

$this->data['button_confirm'] = $this->language->get('button_confirm');
$this->data['button_back'] = $this->language->get('button_back');

$this->load->model('checkout/order');

$order_info = $this->model_checkout_order->getOrder($this->session->data['order_id']);

$this->load->library('encryption');

$this->data['action'] = 'https://www.domain-removed.com/purchaseAndRedeem.php';

$this->data['merchant'] = $this->config->get('onlineVoucher_merchant');
$this->data['order_id'] = $order_info['order_id'];
$this->data['amount'] = $order_info['total'];
$this->data['currency'] = $order_info['currency'];
$this->data['description'] = $this->config->get('config_store') . ' - #' . $order_info['order_id'];
$this->data['name'] = $order_info['payment_firstname'] . ' ' . $order_info['payment_lastname'];

if (!$order_info['payment_address_2']) {
$this->data['address'] = $order_info['payment_address_1'] . ', ' . $order_info['payment_city'] . ', ' . $order_info['payment_zone'];
} else {
$this->data['address'] = $order_info['payment_address_1'] . ', ' . $order_info['payment_address_2'] . ', ' . $order_info['payment_city'] . ', ' . $order_info['payment_zone'];
}

$this->data['postcode'] = $order_info['payment_postcode'];

$payment_address = $this->customer->getAddress($this->session->data['payment_address_id']);

$this->data['country'] = $payment_address['iso_code_2'];
$this->data['telephone'] = $order_info['telephone'];
$this->data['email'] = $order_info['email'];
$this->data['test'] = $this->config->get('onlineVoucher_test');

$this->data['back'] = $this->url->https('checkout/payment');

$this->id       = 'payment';
$this->template = $this->config->get('config_template') . 'payment/onlineVoucher.tpl';

$this->render();

}

public function callback() {

if (isset($this->request->post['callbackPW']) && ($this->request->post['callbackPW'] == $this->config->get('onlineVoucher_password'))) {
$this->language->load('payment/onlineVoucher');

$this->data['title'] = sprintf($this->language->get('heading_title'), $this->config->get('config_store'));

if (!isset($this->request->server['HTTPS']) || ($this->request->server['HTTPS'] != 'on')) {
$this->data['base'] = HTTP_SERVER;
} else {
$this->data['base'] = HTTPS_SERVER;
}

$this->data['charset'] = $this->language->get('charset');
$this->data['language'] = $this->language->get('code');
$this->data['direction'] = $this->language->get('direction');

$this->data['heading_title'] = sprintf($this->language->get('heading_title'), $this->config->get('config_store'));

$this->data['text_response'] = $this->language->get('text_response');
$this->data['text_success'] = $this->language->get('text_success');
$this->data['text_success_wait'] = sprintf($this->language->get('text_success_wait'), $this->url->https('checkout/success'));
$this->data['text_failure'] = $this->language->get('text_failure');
$this->data['text_failure_wait'] = sprintf($this->language->get('text_failure_wait'), $this->url->https('checkout/payment'));

$this->data['button_continue'] = $this->language->get('button_continue');

if (isset($this->request->post['transStatus']) && $this->request->post['transStatus'] == 'Y') { 
$this->load->model('checkout/order');

$this->model_checkout_order->confirm($this->request->post['cartId'], $this->config->get('onlineVoucher_order_status_id'));

$message = '';

if (isset($this->request->post['transId'])) {
$message .= 'transId: ' . $this->request->post['transId'] . "\n";
}

if (isset($this->request->post['transStatus'])) {
$message .= 'transStatus: ' . $this->request->post['transStatus'] . "\n";
}

if (isset($this->request->post['countryMatch'])) {
$message .= 'countryMatch: ' . $this->request->post['countryMatch'] . "\n";
}

if (isset($this->request->post['AVS'])) {
$message .= 'AVS: ' . $this->request->post['AVS'] . "\n";
}

if (isset($this->request->post['rawAuthCode'])) {
$message .= 'rawAuthCode: ' . $this->request->post['rawAuthCode'] . "\n";
}

if (isset($this->request->post['authMode'])) {
$message .= 'authMode: ' . $this->request->post['authMode'] . "\n";
}

if (isset($this->request->post['rawAuthMessage'])) {
$message .= 'rawAuthMessage: ' . $this->request->post['rawAuthMessage'] . "\n";
}

if (isset($this->request->post['wafMerchMessage'])) {
$message .= 'wafMerchMessage: ' . $this->request->post['wafMerchMessage'] . "\n";
}

$this->model_checkout_order->update($this->request->post['cartId'], $this->config->get('onlineVoucher_order_status_id'), $message, FALSE);

$this->data['continue'] = $this->url->https('checkout/success');

$this->template = $this->config->get('config_template') . 'payment/onlineVoucher_success.tpl';
  
   $this->render();
} else {
     $this->data['continue'] = $this->url->https('checkout/payment');

$this->template = $this->config->get('config_template') . 'payment/onlineVoucher_failure.tpl';
  
   $this->render();
}
}
}
}
?>



Any guidance would be highly appreciated...

Phil