### Run SetaPDF Demos with PHP Webserver

Source: https://github.com/setasign/setapdf-demos/blob/master/README.md

Navigate to the public directory and start the PHP built-in webserver. Access the demos via http://localhost:8080.

```bash
cd public
php -S localhost:8080
```

--------------------------------

### Read PFX/P12 File with openssl_pkcs12_read

Source: https://github.com/setasign/setapdf-demos/blob/master/public/demos/5-Signer/1-standard-signatures/3-use-a-pfx-or-p12-file/description.html

Use this function to read a PFX/P12 file and extract the certificate and private key. Requires the file path, a password, and output variables for the certificate and private key.

```php
<?php

$pfx_file = 'path/to/your/certificate.pfx';
$password = 'your_pfx_password';

if (openssl_pkcs12_read(file_get_contents($pfx_file), $certs, $password)) {
    $certificate = $certs['cert'];
    $private_key = $certs['pkey'];

    echo "Certificate:\n";
    echo $certificate;
    echo "\nPrivate Key:\n";
    echo $private_key;
} else {
    echo "Error reading PFX file:\n";
    echo openssl_error_string();
}

?>
```

--------------------------------

### Add Stamp to All Pages

Source: https://github.com/setasign/setapdf-demos/blob/master/public/demos/6-Stamper/2-adding-stamps/3-show-on-page/description.html

To apply a stamp to every page in the document, set $showOnPage to 'all'.

```php
$pdf->addStamp("path/to/stamp.pdf", ["showOnPage" => "all"]);
```

--------------------------------

### Add Stamp to Page Range

Source: https://github.com/setasign/setapdf-demos/blob/master/public/demos/6-Stamper/2-adding-stamps/3-show-on-page/description.html

Specify a range of pages for the stamp by providing an array of page numbers to $showOnPage. The range is inclusive.

```php
$pdf->addStamp("path/to/stamp.pdf", ["showOnPage" => [2, 5]]);
```

--------------------------------

### Add Stamp to Even Pages

Source: https://github.com/setasign/setapdf-demos/blob/master/public/demos/6-Stamper/2-adding-stamps/3-show-on-page/description.html

To apply a stamp only to even-numbered pages, set $showOnPage to 'even'.

```php
$pdf->addStamp("path/to/stamp.pdf", ["showOnPage" => "even"]);
```

--------------------------------

### Add Stamp to Specific Page

Source: https://github.com/setasign/setapdf-demos/blob/master/public/demos/6-Stamper/2-adding-stamps/3-show-on-page/description.html

Use the $showOnPage parameter to display a stamp on a particular page. Ensure the page number is valid.

```php
$pdf->addStamp("path/to/stamp.pdf", ["showOnPage" => 1]);
```

--------------------------------

### Add Stamp to Odd Pages

Source: https://github.com/setasign/setapdf-demos/blob/master/public/demos/6-Stamper/2-adding-stamps/3-show-on-page/description.html

Use the string 'odd' to apply the stamp exclusively to odd-numbered pages.

```php
$pdf->addStamp("path/to/stamp.pdf", ["showOnPage" => "odd"]);
```

--------------------------------

### Set Stamp Tag Name to Null

Source: https://github.com/setasign/setapdf-demos/blob/master/public/demos/6-Stamper/3-various/5-tagged-stamp/description.html

Set the tag name to null if the resolved parent tag should be used instead of creating an individual tag. This limits the stamp to a single page.

```php
$stamp->setTagName(null);
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.