Username:   Password:  

09 2009 24

PHP

anonymous

3

Image Resizing class in PHP 

<?php
Class Geo_Img_Resize {
 
    private $_image = null;
 
 
    function __construct($originalPath, $maxDim) {
        $this->process($originalPath, $maxDim);
    }
 
    private function process($path, $max) {
        $imageContent = file_get_contents($path);
        $image = imagecreatefromstring($imageContent);
 
        if ($image === false) {
            // Image corrupted
            return;
        }
 
        $imageHeight = imagesy($image);
        $imageWidth = imagesx($image);
 
        $newDim = null;
 
        if ($imageHeight > $imageWidth) {
            // Potrait
            $newDim = array(
                'height' => (int) $max,
                'width' =>  round($imageWidth * $max / $imageHeight)
            );
        } else {
            // Landscape
            $newDim = array(
                'height' => round($imageHeight * $max / $imageWidth),
                'width' => $max
            );
        }
 
        $newImage = imageCreateTrueColor($newDim['width'], $newDim['height']);
 
        imagecopyresized(
            $newImage, $image, 0,0,0,0,$newDim['width'],
            $newDim['height'],$imageWidth,$imageHeight
        );
 
        $this->_image = $newImage;
    }
 
    public function save($path) {
        if ($this->_image !== null) {
            imagepng($this->_image, $path);
        }
    }
 
    public function display() {
        imagepng($this->_image);
    }
}
?>

Tags

Image resize php

09 2009 21

PHP

anonymous

132

Replace all URLs with TinyUrls in a text 

<?php
 
$text = 'foo bar http://maps.google.com/ foo http://somelongurlthatdoesntexist.com bar';
 
if (preg_match_all('|(http://[^s]+)|', $text, $matches, PREG_PATTERN_ORDER)) {
	foreach ($matches[0] as $match) {
		$text = str_replace($match, getTinyUrl($match), $text);
	}
}
echo $text;
 
function getTinyUrl($url) {
	return file_get_contents('http://tinyurl.com/api-create.php?url='.urlencode($url));
}
 
?>

Tags

tinyurl php short url

09 2009 16

PHP

anonymous

4

Render include file to variable 

<?php
$GLOBALS['BufferedErrors']=Array();
function errorParse($errno, $errstr, $errfile, $errline, $errcontext) {
    $errorTypes = Array(
        E_ERROR => 'Fatal Error',
        E_WARNING => 'Warning',
        E_PARSE => 'Parse Error',
        E_NOTICE => 'Notice',
        E_CORE_ERROR => 'Fatal Core Error',
        E_CORE_WARNING => 'Core Warning',
        E_COMPILE_ERROR => 'Compilation Error',
        E_COMPILE_WARNING => 'Compilation Warning',
        E_USER_ERROR => 'Triggered Error',
        E_USER_WARNING => 'Triggered Warning',
        E_USER_NOTICE => 'Triggered Notice',
        E_STRICT => 'Deprecation Notice',
        E_RECOVERABLE_ERROR => 'Catchable Fatal Error'
    );
    $ret=(object)Array(
        'number'=>$errno,
        'message'=>$errstr,
        'file'=>$errfile,
        'line'=>$errline,
        'context'=>$errcontext,
        'type'=>$errorTypes[$errno]
    );
    $GLOBALS['BufferedErrors'][]=$ret;
    return false;
}
function parse($fileToInclude, $argumentsToFile=false) {
    $bufferedErrorStack = $GLOBALS['BufferedErrors'];
    set_error_handler('errorParse', error_reporting());
    $GLOBALS['BufferedErrors']=Array();
 
    if (!file_exists($fileToInclude))
        return '';
    if ($argumentsToFile === false)
        $argumentsToFile = Array();
    $argumentsToFile = array_merge($GLOBALS, $argumentsToFile);
    foreach ($argumentsToFile as $variableName => $variableValue)
        $$variableName = $variableValue;
    ob_start();
    include($fileToInclude);
    $ret = ob_get_contents();
    ob_end_clean();
 
    restore_error_handler();
    $errors = $GLOBALS['BufferedErrors'];
    $GLOBALS['BufferedErrors'] = $bufferedErrorStack;
    if (count($errors)>0) {
        $ret.='<ul class="error">';
        foreach ($errors as $error)
            $ret.=
                '<li>'.
                    '<b>'.$error->type.'</b>: '.
                    $error->message.
                    '<blockquote>'.
                        '<i>file</i>: '.$error->file.'<br />'.
                        '<i>line</i>: '.$error->line.
                    '</blockquote>'.
                '</li>';
        $ret.='</ul>';
    }
    return $ret;
}

This script includes a PHP file - but render its output to a variable, rather than to the buffer. It's also set up to load the script with a variable set, and automagically loads globals into the script's namespace, making it an effective templating scheme. It also has error handling, so that you're not flying blind when using output buffering.

Tags

PHP ob_start buffering

09 2009 02

PHP

anonymous

4

Captcha 

<?php
	function make_seed(){
		list($usec , $sec) = explode (' ', microtime());
		return (float) $sec + ((float) $usec * 100000);
	}
 
	function randomString($len) {	
		srand(make_seed());
 
		$possible = 'abcdefhijkmnprstuvwxyz23456789';
 
		$str = '';
		while(strlen($str)<$len) {
			$str .= substr($possible,(rand()%(strlen($possible))),1);
		}
 
		return($str);
	}
 
	session_start();
 
	unset($_SESSION['captcha_spam']);
 
	$text = randomString(5);
	$_SESSION['captcha_spam'] = $text;
 
	header('Content-type: image/png');
	$img = ImageCreateFromPNG('captcha.png');
	$color = ImageColorAllocate($img, 0, 0, 0);
	$ttf = getcwd().'/somefont.tff';
	$ttfsize = 20;
	$angle = rand(0,5);
	$t_x = rand(5,20);
	$t_y = 25;
	imagettftext($img, $ttfsize, $angle, $t_x, $t_y, $color, $ttf, $text);
	imagepng($img);
	imagedestroy($img);
?>

Simple captcha image. captcha.png is the backround image for you captcha. "somefont.tff" is a random truetype font for the text in your captcha image.

Tags

PHP captcha

07 2009 22

PHP

anonymous

4

substr replacement that does not break words 

function snippet($text,$length=64,$tail="...") {
    $text = trim($text);
    $txtl = strlen($text);
    if($txtl > $length) {
        for($i=1;$text[$length-$i]!=" ";$i++) {
            if($i == $length) {
                return substr($text,0,$length) . $tail;
            }
        }
        $text = substr($text,0,$length-$i+1) . $tail;
    }
    return $text;
}
 

This PHP function shortens a string without breaking words.

Tags

PHP substr replacement

07 2009 21

PHP

anonymous

5

Convert shortened URL back to original URL 

<?php
function getNormalUrl($url) {
	$url = trim($url);
	$h = get_headers($url, true);
	return $h['Location'];
}
?>

This PHP function takes a shortened URL (ie TinyURL, bit.ly, etc) and converts it back to the original URL.

Tags

URL PHP web TinyURL bit ly

07 2009 21

PHP

anonymous

4

Create TinyURL with PHP 

function getTinyUrl($url) {
	return file_get_contents('http://tinyurl.com/api-create.php?url='.urlencode($url));
}
 
// Example Use:
$url = 'http://google.com';
echo getTinyUrl($url);

This PHP function uses the TinyURL API to create a shorter URL.

Tags

PHP TinyURL function

07 2009 21

PHP

anonymous

5

Memcached wrapper for PHP 

<?php
/**
 * Wrapper for storing and retrieving memcached data.
 *
 * Start memcached by running the following command:
 * memcached -d -m 1024 -u root -l 127.0.0.1 -p 11211
 * 
 */
class Cache_Main {
 
	/** @var int */
	const MEMCACHE_PORT = 11211;
 
	/** @var string */
	const MEMCACHE_HOST = '127.0.0.1';
 
	/**
	 * Standard-timeout (10 min)
	 *
	 * @var int
	 */
	const MEMCACHE_STD_TIMEOUT = 600;
 
	/** @var Memcache */
	private static $_memcache = null;
 
	/** @var Atom_Cache_Main */
	private static $_instance = null;
 
 
	private function __construct() {
		self::$_memcache = new Memcache();
 
		if (self::$_memcache->connect(self::MEMCACHE_HOST, self::MEMCACHE_PORT) === false) {
			throw new Exception('Could not connect', 0);
		}
	}
 
	/**
	 * Singleton accessor
	 *
	 * @return Atom_Cache_Main
	 */
	public static function instance() {
		if(self::$_instance == null) {
			self::$_instance = new self();
		}
 
		return self::$_instance;
	}
 
	/**
	 * Adds <code>$object</code> to the cache, accessable by  <code>$key</code>
	 *
	 * @param string $key
	 * @param mixed $object
	 * @param int $timeout Timespan the object is hold in the cache in seconds
	 */
	public function add($key, $object, $timeout = null) {
		self::$_memcache->set(
			$key,
			$object,
			false,
			($timeout === null ? self::MEMCACHE_STD_TIMEOUT : $timeout)
		);
	}
 
	/**
	 * Retrieves stored data
	 *
	 * @param string $key Identifier
	 * @return mixed Stored data by memcache
	 */
	public function get($key) {
		return self::$_memcache->get($key);
	}
}
?>

Wrapper for storing and retrieving memcached data.

Tags

memcached php

07 2009 16

PHP

anonymous

3

Test filename in PHP 

/**
 * Tests, if given filename is valid
 *
 * @param string $filename
 * @return bool
 */
public static function isValidFilename($filename) {
	return (bool) preg_match('/^[a-z0-9_ ]{1,30}.[a-z]{1,3}$/i', $filename);
}

Tests, if a given filename is valid.

Tags

PHP files filename test verify

07 2009 08

PHP

Marc

5

Extract the search term from google referer 

$referer = strtolower($_SERVER['HTTP_REFERER']);
 
// Test if user comes from google
if (strpos($referer, 'google')) {
	// Delete all before &q=
    $tmp = substr($referer, strpos($referer, 'q='));		
 
    // Remove q=
	$tmp = substr($tmp, 2);
 
	// Remove everything after the next &
	if (strpos($tmp, '&')) {
		$tmp = substr($tmp, 0,strpos($tmp, '&'));
	}	
	// we have the results.
	$searchTerm = urldecode($tmp);
}

Takes the referer and extracts the search term, if user comes from google.

Tags

google php referer keyword search term

07 2009 01

PHP

Marc

4

str_replace_once() 

<?php
/**
 * @param string $search
 * @param string $replace
 * @param string $subject
 */
function str_replace_once($search, $replace, $subject) {
    $firstChar = strpos($subject, $search);
    if($firstChar !== false) {
        $beforeStr = substr($subject,0,$firstChar);
        $afterStr = substr($subject, $firstChar + strlen($search));
        return $beforeStr.$replace.$afterStr;
    } else {
        return $subject;
    }
}
?>

Works like str_replace() but replaces the first occurence of $search with $replace only.

Tags

str_replace php

06 2009 25

PHP

anonymous

5

Test if telephone number belongs to a cellphone 

function isCellphoneNumber($tel) {
	// Remove all non relevant characters
	$tel = preg_replace("/[^0-9\+]/", '', $tel);
 
	$number = '';
	$countryCode = 0;
 
	if (preg_match("/^\+\d{2}/", $tel)) {
		// Number with country code with trailing +
		$countryCode = substr($tel, 1, 2);
		$number = substr($tel, 3, strlen($tel) - 3);
		$number = "00".$countryCode.$number;
	} elseif (preg_match("/^00/", $tel)) {
		// Country code present with trailing 00
		$landesVorwahl = substr($tel, 2, 2);
		$number = substr($tel, 4, strlen($tel) - 2);
		$number = "00".$landesVorwahl.$number;
	}
 
	switch ((int) $countryCode) {
		default:
		case 49: // Germany
			$netzvorwahlen = array(
					'0151', '0160',
					'0170',	'0171',	'0175',	'0151',
					'01520', '0162', '0172',	'0173',
					'0174',	'0152',	'0157',	'01570',
					'01577', '0163', '0177',	'0178',
					'0155',	'0159',	'0176', '0179'
				);
			break;
 
		case 43: // Austria
			$netzvorwahlen = array(
					'0664',
					'0676',
					'0650',
					'0699'
				);
			break;
 
		case 41: // Swiss
			$netzvorwahlen = array(
					'079',
					'076',
					'078',
					'077'
				);
			break;
 
		case 29: // Spanien
			$netzvorwahlen = array('6'); // In ESP beginnen alle Handynummern mit einer 6
			break;
	}
 
	foreach ($netzvorwahlen as $vorwahl)
	{
		$vorwahl = preg_replace("/^0/", '', $vorwahl);
 
		if (preg_match("/^00${landesVorwahl}${vorwahl}/", $nummer))
		{
			$tel = $nummer;
 
			return true;
		}
	}
 
	return false;
}
 

This function only supports cellphone numbers for the german speaking part of europe (swiss, germany, austria).

Tags

cellphone number php verify

06 2009 15

PHP

Marc

4

US Area Codes PHP Array 

<?php
//This is just a little array filled with all the area codes
//for each state. Useful for verifying phone numbers.
//Apologies for my screen name, I didn't want to bother registering
//for an account... But you guys helped me out alot so I felt
//like I had to give back. :)
$areacodes = array(780 => "AB",
                   403 => "AB",
                   907 => "AK",
                   205 => "AL",
                   256 => "AL",
                   334 => "AL",
                   251 => "AL",
                   870 => "AR",
                   501 => "AR",
                   479 => "AR",
                   480 => "AZ",
                   623 => "AZ",
                   928 => "AZ",
                   602 => "AZ",
                   520 => "AZ",
                   628 => "CA",
                   341 => "CA",
                   764 => "CA",
                   925 => "CA",
                   909 => "CA",
                   562 => "CA",
                   661 => "CA",
                   657 => "CA",
                   510 => "CA",
                   650 => "CA",
                   949 => "CA",
                   760 => "CA",
                   415 => "CA",
                   951 => "CA",
                   752 => "CA",
                   831 => "CA",
                   209 => "CA",
                   669 => "CA",
                   408 => "CA",
                   559 => "CA",
                   626 => "CA",
                   442 => "CA",
                   530 => "CA",
                   916 => "CA",
                   707 => "CA",
                   627 => "CA",
                   714 => "CA",
                   310 => "CA",
                   323 => "CA",
                   213 => "CA",
                   424 => "CA",
                   747 => "CA",
                   818 => "CA",
                   858 => "CA",
                   935 => "CA",
                   619 => "CA",
                   805 => "CA",
                   369 => "CA",
                   720 => "CO",
                   303 => "CO",
                   970 => "CO",
                   719 => "CO",
                   203 => "CT",
                   959 => "CT",
                   475 => "CT",
                   860 => "CT",
                   202 => "DC",
                   302 => "DE",
                   689 => "FL",
                   407 => "FL",
                   239 => "FL",
                   836 => "FL",
                   727 => "FL",
                   321 => "FL",
                   754 => "FL",
                   954 => "FL",
                   352 => "FL",
                   863 => "FL",
                   904 => "FL",
                   386 => "FL",
                   561 => "FL",
                   772 => "FL",
                   786 => "FL",
                   305 => "FL",
                   861 => "FL",
                   941 => "FL",
                   813 => "FL",
                   850 => "FL",
                   478 => "GA",
                   770 => "GA",
                   470 => "GA",
                   404 => "GA",
                   706 => "GA",
                   678 => "GA",
                   912 => "GA",
                   229 => "GA",
                   671 => "GU",
                   808 => "HI",
                   515 => "IA",
                   319 => "IA",
                   563 => "IA",
                   641 => "IA",
                   712 => "IA",
                   208 => "ID",
                   217 => "IL",
                   282 => "IL",
                   872 => "IL",
                   312 => "IL",
                   773 => "IL",
                   464 => "IL",
                   708 => "IL",
                   815 => "IL",
                   224 => "IL",
                   847 => "IL",
                   618 => "IL",
                   309 => "IL",
                   331 => "IL",
                   630 => "IL",
                   765 => "IN",
                   574 => "IN",
                   260 => "IN",
                   219 => "IN",
                   317 => "IN",
                   812 => "IN",
                   913 => "KS",
                   785 => "KS",
                   316 => "KS",
                   620 => "KS",
                   327 => "KY",
                   502 => "KY",
                   859 => "KY",
                   606 => "KY",
                   270 => "KY",
                   504 => "LA",
                   985 => "LA",
                   225 => "LA",
                   318 => "LA",
                   337 => "LA",
                   774 => "MA",
                   508 => "MA",
                   781 => "MA",
                   339 => "MA",
                   857 => "MA",
                   617 => "MA",
                   978 => "MA",
                   351 => "MA",
                   413 => "MA",
                   443 => "MD",
                   410 => "MD",
                   280 => "MD",
                   249 => "MD",
                   969 => "MD",
                   240 => "MD",
                   301 => "MD",
                   207 => "ME",
                   383 => "ME",
                   517 => "MI",
                   546 => "MI",
                   810 => "MI",
                   278 => "MI",
                   313 => "MI",
                   586 => "MI",
                   248 => "MI",
                   734 => "MI",
                   269 => "MI",
                   906 => "MI",
                   989 => "MI",
                   616 => "MI",
                   231 => "MI",
                   679 => "MI",
                   947 => "MI",
                   612 => "MN",
                   320 => "MN",
                   651 => "MN",
                   763 => "MN",
                   952 => "MN",
                   218 => "MN",
                   507 => "MN",
                   636 => "MO",
                   660 => "MO",
                   975 => "MO",
                   816 => "MO",
                   314 => "MO",
                   557 => "MO",
                   573 => "MO",
                   417 => "MO",
                   670 => "MP",
                   601 => "MS",
                   662 => "MS",
                   228 => "MS",
                   406 => "MT",
                   336 => "NC",
                   252 => "NC",
                   984 => "NC",
                   919 => "NC",
                   980 => "NC",
                   910 => "NC",
                   828 => "NC",
                   704 => "NC",
                   701 => "ND",
                   402 => "NE",
                   308 => "NE",
                   603 => "NH",
                   908 => "NJ",
                   848 => "NJ",
                   732 => "NJ",
                   551 => "NJ",
                   201 => "NJ",
                   862 => "NJ",
                   973 => "NJ",
                   609 => "NJ",
                   856 => "NJ",
                   505 => "NM",
                   957 => "NM",
                   702 => "NV",
                   775 => "NV",
                   315 => "NY",
                   518 => "NY",
                   716 => "NY",
                   585 => "NY",
                   646 => "NY",
                   347 => "NY",
                   718 => "NY",
                   212 => "NY",
                   516 => "NY",
                   917 => "NY",
                   845 => "NY",
                   631 => "NY",
                   607 => "NY",
                   914 => "NY",
                   216 => "OH",
                   330 => "OH",
                   234 => "OH",
                   567 => "OH",
                   419 => "OH",
                   380 => "OH",
                   440 => "OH",
                   740 => "OH",
                   614 => "OH",
                   283 => "OH",
                   513 => "OH",
                   937 => "OH",
                   918 => "OK",
                   580 => "OK",
                   405 => "OK",
                   503 => "OR",
                   971 => "OR",
                   541 => "OR",
                   814 => "PA",
                   717 => "PA",
                   570 => "PA",
                   358 => "PA",
                   878 => "PA",
                   835 => "PA",
                   484 => "PA",
                   610 => "PA",
                   445 => "PA",
                   267 => "PA",
                   215 => "PA",
                   724 => "PA",
                   412 => "PA",
                   939 => "PR",
                   787 => "PR",
                   401 => "RI",
                   843 => "SC",
                   864 => "SC",
                   803 => "SC",
                   605 => "SD",
                   423 => "TN",
                   865 => "TN",
                   931 => "TN",
                   615 => "TN",
                   901 => "TN",
                   731 => "TN",
                   254 => "TX",
                   325 => "TX",
                   713 => "TX",
                   940 => "TX",
                   817 => "TX",
                   430 => "TX",
                   903 => "TX",
                   806 => "TX",
                   737 => "TX",
                   512 => "TX",
                   361 => "TX",
                   210 => "TX",
                   936 => "TX",
                   409 => "TX",
                   979 => "TX",
                   972 => "TX",
                   469 => "TX",
                   214 => "TX",
                   682 => "TX",
                   832 => "TX",
                   281 => "TX",
                   830 => "TX",
                   956 => "TX",
                   432 => "TX",
                   915 => "TX",
                   435 => "UT",
                   801 => "UT",
                   385 => "UT",
                   434 => "VA",
                   804 => "VA",
                   757 => "VA",
                   703 => "VA",
                   571 => "VA",
                   540 => "VA",
                   276 => "VA",
                   381 => "VA",
                   236 => "VA",
                   802 => "VT",
                   509 => "WA",
                   360 => "WA",
                   564 => "WA",
                   206 => "WA",
                   425 => "WA",
                   253 => "WA",
                   715 => "WI",
                   920 => "WI",
                   414 => "WI",
                   262 => "WI",
                   608 => "WI",
                   353 => "WI",
                   420 => "WI",
                   304 => "WV",
                   307 => "WY");
?>

Tags

php array phone code area

06 2009 10

PHP

Marc

4

Find out if string is serialized variable 

<?php
 
$string = "a:0:{}";
if(preg_match("/(a|O|s|b)\x3a[0-9]*?
((\x3a((\x7b?(.+)\x7d)|(\x22(.+)\x22\x3b)))|(\x3b))/", $string))
{
echo "Serialized.";
}
else
{
echo "Not serialized.";
}
 
?>

If you need to check whether string is a serialized representation of variable(sic!) you can use this. But don't forget, string in serialized representation could be VERY big, so match work can be slow, even with fast preg_* functions.

Tags

regex PHP preg_match serialization

06 2009 05

PHP

Marc

5

Create XML file from MySQL query 

<?php
 
header("Content-type: text/xml");
 
$host = "localhost";
$user = "root";
$pass = "";
$database = "test";
 
$linkID = mysql_connect($host, $user, $pass) or die("Could not connect to host.");
mysql_select_db($database, $linkID) or die("Could not find database.");
 
$query = "SELECT * FROM blog ORDER BY date DESC";
$resultID = mysql_query($query, $linkID) or die("Data not found.");
 
$xml_output = "<?xml version=\"1.0\"?>\n";
$xml_output .= "<entries>\n";
 
for($x = 0 ; $x < mysql_num_rows($resultID) ; $x++){
    $row = mysql_fetch_assoc($resultID);
    $xml_output .= "\t<entry>\n";
    $xml_output .= "\t\t<date>" . $row['date'] . "</date>\n";
        // Escaping illegal characters
        $row['text'] = str_replace("&", "&", $row['text']);
        $row['text'] = str_replace("<", "<", $row['text']);
        $row['text'] = str_replace(">", "&gt;", $row['text']);
        $row['text'] = str_replace("\"", "&quot;", $row['text']);
    $xml_output .= "\t\t<text>" . $row['text'] . "</text>\n";
    $xml_output .= "\t</entry>\n";
}
 
$xml_output .= "</entries>";
 
echo $xml_output;
 
?>

Tags

PHP XML MySQL

06 2009 05

PHP

Marc

4

Remove non alphanumeric characters 

<?php
    $output = preg_replace('/[^[:alnum:]]/', '', $input);
?>

Replaces everything, thats not alphanumeric in a string. Note that spaces are not alphanumeric, too.

Tags

php regex preg_replace