Archive for the ‘php’ Category

Using the PHP Mail Function with Additional Headers

No Comments
Posted 07 Feb 2010 — by admin
Category php

Pass a fourth parameter to the mail() function with the header information.

<?php
$to = "jane@example.com";
$subject = "Hello World!";
$body = "This will be sent from email-addr@example.com";
$headers = "From: email-addr@example.com\r\nX-Mailer: php";
mail($to, $subject, $body, $headers);
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Generate MySQL Datetime Type Using PHP Date() Function

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Posted 05 Feb 2010 — by admin
Category php

If you want to insert a datetime that matches the default mysql datetime type format use this 

date('Y-m-d H:i:s');
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PHP Paypal IPN Script

2 Comments
Posted 29 Jan 2010 — by admin
Category php

Simple script for posting a valid response back to Paypal service after a sale is completed using the Paypal Instant Checkout payment method. 

<?php
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';

foreach ($_POST as $key => $value) {
  $value = urlencode(stripslashes($value));
  $req .= "&$key=$value";
}

// post back to PayPal system to validate
$header .= "POST /cgi-bin/webscr HTTP/1.0\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
$fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr, 30);

// assign posted variables to local variables
$item_name        = $_POST['item_name'];
$item_number      = $_POST['item_number'];
$payment_status   = $_POST['payment_status'];
$payment_amount   = $_POST['mc_gross'];
$payment_currency = $_POST['mc_currency'];
$txn_id           = $_POST['txn_id'];
$receiver_email   = $_POST['receiver_email'];
$payer_email      = $_POST['payer_email'];

if (!$fp) {
// HTTP ERROR
} else {
  fputs ($fp, $header . $req);
  while (!feof($fp)) {
    $res = fgets ($fp, 1024);
    if (strcmp ($res, "VERIFIED") == 0) {
      // check the payment_status is Completed
      // check that txn_id has not been previously processed
      // check that receiver_email is your Primary PayPal email
      // check that payment_amount/payment_currency are correct
      // process payment
    } else if (strcmp ($res, "INVALID") == 0) {
      // log for manual investigation
    }
  }
fclose ($fp);
}

I grabbed this script from Paypal Docs… I never can find the info I need w/in their site so I’m posting here for reference. https://www.paypal.com/us/cgi-bin/webscr?cmd=p/pdn/ipn-codesamples-pop-outside#php

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Listing Files and Directories with PHP

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Posted 27 Jan 2010 — by admin
Category php

Listing all files and directories using PHP 5.

<?php
$files = array(); $dir = dir(".");
while(false!==($file=$dir->read())):
  if(($file{0}!=".") && ($file{0}!="~") && (substr($file, -3)!="LCK")
    && ($file!=basename($_SERVER["PHP_SELF"]))):
      $files[$file] = stat($file); //
    endif;
endwhile;
$dir->close(); ksort($files); ?>

<table border=1 cellpadding=5>
<tr><th>Name</th><th>Size</th><th>Date</th></tr>
<?php foreach($files as $name => $stats): ?>
  <tr>
    <td><?php print $name;?></td>
    <td><?php print $stats['size']; ?></td>
    <td><?php print date("m-d-Y h:ia", $stats['mtime']); ?></td>
  </tr>
<?php endforeach; ?></table>
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Highlight String in PHP

1 Comment
Posted 23 Jan 2010 — by admin
Category php

Function for highlighting text/strings in PHP. 

$content = file_get_contents("http://php.net/");

print highlight("PHP", $content);

function highlight($match, $string){
  return str_ireplace($match, "<span style='background:yellow'>$match</span>", $string);
}

Will output something like this

Highlighted PHP.Net

Highlighted PHP.Net

***Notice all the styles are gone :( … would need to parse the document body to maintain stylesheet and other ‘php’ strings that might be in resources paths.

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Absolutize Relative Links Using PHP and Preg_Replace_Callback

1 Comment
Posted 13 Jan 2010 — by admin
Category php

I was in the market for a simple php script to replace hrefs with their absolute paths from scraped web pages. I wrote one myself. I used the preg_replace_callback function so that I could pass the parsed results as a single variable. 

<?php
$domain = "http://seanbehan.com";
$pattern = "/\bhref=[\"|'](.*?)[\"|']/";
$string = file_get_contents($domain);

// prepends relative links w/ $domain skips returns the match if already absolute
function replace_href($match){
  global $domain;
  if(substr($match[1], 0, 7)!=="http://" && substr($match[1],0,8)!=="https://"){
    return "href='".$domain.$match[1]."'";
  } else {
    return "href='".$match[1]."'s";
  }
}
print preg_replace_callback($pattern, "replace_href", $string);
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Grab a Twitter Status without the Twitter API

No Comments
Posted 09 Dec 2009 — by admin
Category php

Quick and dirty way to grab the users status messages without having to go through the twitter api (not having to authenticate that is). You can grab the RSS feed and indicate the number of statuses returned with the count param. I wrote this function for my blog in PHP. It uses the curl extension so if it’s not installed type 

apt-get install php5-curl

Otherwise you’ll have to use the fsockopen function. Then it’s just a matter of parsing the XML and getting at what data you want. I just want one status so I’m accessing the element directly, rather than looping over the returned data set. 

<php
function latest_twitter_status_message(){
        // grab the rss feed link from some user, like me and indicate the count in the url
	$host = "http://twitter.com/statuses/user_timeline/11036982.rss?count=1";
	// using curl
	$ch = curl_init($host);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_HEADER, 0);
	$data = curl_exec($ch);
	curl_close($ch);
	$doc = new SimpleXmlElement($data, LIBXML_NOCDATA);
	return "{$doc->channel->item[0]->description}";
}
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