QR code generator class

Here is a QR code generator class in PHP that can be used to generate QR Code images using Google Chart API.

It can send an HTTP request to the Google Chart API Web server to request the generation of a PNG image that represents the QR code graphic for a given information snippet.

Currently the class can request the generation of QR codes for information snippets of types: bookmark, text, SMS message, phone number, contact information, e-mail message, geo-location, WIFI access, i-appli metadata or abitrary content-type.

The generated QR code image can be returned as a string, served for download or returned as an URL string.

QR-codes.co.cc is an example website using this class

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PHP classes - QR code generator class

Example codes

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<?php
include("qrcode.php");

$qr = new qrcode();

//link
$qr->link("http://webcodingeasy.com");
echo "<p>Link</p>";
echo "<p><img src='".$qr->get_link()."' border='0'/></p>";

//text
$qr->text("Any UTF8 characters like Ä?Ä“Å«");
echo "<p>UTF8 text</p>";
echo "<p><img src='".$qr->get_link()."' border='0'/></p>";

//sms
//First parameter - phone number
//Second parameter - sms text
$qr->sms("12345678", "sms text");
echo "<p>SMS with phone number and text</p>";
echo "<p><img src='".$qr->get_link()."' border='0'/></p>";
?>

Examples in action

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Example scripts provided with package in action:

example.php

Method list

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QR code with link
QR code with bookmark
QR code with text
QR code with sms
QR code with phone number
QR code with Contact info
QR code with email
QR code with geographical location
QR code with wifi connection information
QR code with I-appli information
QR code with file as content
Get QR code image
Get link to QR code image
Forcing download dialog
Saving image on server

QR code with link

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Method name	link($url)
Description	Creates QR code with provided link
Input parameters	string $url - url to endcode in QR code
Example input	link("http://webcodingeasy.com")

QR code with bookmark

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Method name	bookmark($title, $url)
Description	Creates QR code with bookmark to provided link
Input parameters	string $title - title of bookmark string $url - bookmark url
Example input	bookmark("Webcoding Easy", "http://webcodingeasy.com")

QR code with text

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Method name	text($text)
Description	Creates QR code with provided text
Input parameters	string $text - text to encode in QR code
Example input	text("Code snippets for PHP, Javascript. Ajax and mysql solutions, script implementations, security and optimization tips")

QR code with sms

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Method name	sms($phone, $text)
Description	Creates QR code with sms data
Input parameters	string $phone - phonenumber to whch to send sms string $text - sms text
Example input	sms("123345678", "Code snippets for PHP, Javascript. Ajax and mysql solutions, script implementations, security and optimization tips")

QR code with phone number

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Method name	phone_number($phone)
Description	Creates QR code with phone number
Input parameters	string $phone - phonenumber to whch to send sms
Example input	phone_number("123345678")

QR code with Contact info

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Method name	contact_info($name, $address, $phone, $email)
Description	Creates QR code with contact info
Input parameters	string $name - name of person string $address - Person's address string $phone - phonenumber to whch to send sms string $email - person's email address
Example input	contact_info("Arturs Sosins", "Stadiona street 15", "123345678", "user@example.com")

QR code with email

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Method name	email($email, $subject, $message)
Description	Creates QR code with email
Input parameters	string $email - email address of person string $subject - Email's subject string $message - email text
Example input	email("user@example.com", "Email subject", "Email text, text, text")

QR code with geographical location

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Method name	geo($lat, $lon, $height)
Description	Creates QR code with geographical location
Input parameters	double $lat - latitude double $lon - longitude double $height - height from earth in meters
Example input	geo(46.404723, -105.838165, 15)

QR code with wifi connection information

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Method name	wifi($type, $ssid, $pass)
Description	Creates QR code with wifi connection information like name of network, password, authentication type (supported by Android devices).
Input parameters	string $type - Authentication type like WAP or WPA string $ssid - name of network to connec to string $pass - password for network
Example input	wifi("WEP", "home_network", "123456")

QR code with I-appli information

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Method name	iappli($adf, $cmd, $param)
Description	Creates QR code with i appli information to automatically start iappli application. i-appli aplication needs to be downloaded beforehand
Input parameters	string $adf - URL accessed to acquire the ADF of i-appli to be activated string $cmd - CMD command, the designated boot command must be declared within the AllowPushBy key of the ADF beforehand string $param - array with up to 16 parameter pairs array("name" => "somename", "value" => "somevalue") sent to the i-appli to be activated
Example input	iappli("http://www.nttdocomo.co.jp/test_appli.jam", "abcde", array(array("name" => "name1", "value" => "value1"),array("name" => "name2", "value" => "value2"))

QR code with file as content

Method name	content($type, $size, $content)
Description	Creates QR code with file as content like gif, jpg or midi files
Input parameters	string $type - type of files, currently supported file types are (image/gif, image/jpeg, application/x-mld, audio/midi, audio/mid, application/x-toruca) int $size - total file size in bytes string $content - file content data in binary code format
Example input	content("image/gif", "1385", "100100001110001...")

Get QR code image

Method name	get_image($size = 150, $EC_level = "L", $margin = "0")
Description	Return QR code image in png format
Input parameters	int $size - as image is always square, there is only one value for height and width in pixels string $EC_level - Error correction level: L - [Default] Allows recovery of up to 7% data loss M - Allows recovery of up to 15% data loss Q - Allows recovery of up to 25% data loss H - Allows recovery of up to 30% data loss int $margin - white margin around QR code
Example usage	header("Content-type: image/png"); echo $qr->get_image();

Get link to QR code image

Method name	get_link($size = 150, $EC_level = "L", $margin = "0")
Description	Return link to QR code image in png format unsing Google Chart API
Input parameters	int $size - as image is always square, there is only one value for height and width in pixels string $EC_level - Error correction level: L - [Default] Allows recovery of up to 7% data loss M - Allows recovery of up to 15% data loss Q - Allows recovery of up to 25% data loss H - Allows recovery of up to 30% data loss int $margin - white margin around QR code
Example usage	echo "<img src='".$qr->get_link()."' border="0"/>";

Forcing download dialog

Method name	download_image($file)
Description	Force to open image download dialog on client side to download image
Input parameters	int $file - image file from get_image method
Example usage	$file = $qr->get_image(); $qr->download_image($file);

Saving image on server

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Method name	save_image($file, $path)
Description	Save generated image on the server
Input parameters	string $file - QR code image returned by get_image method string $path - path and file name where to save image
Example input	save_image($image, "./images/qr_code.png")

Latest changes

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15. February 2012 -
- fixed force download method
- added save_image method to save image on the server
- fixed Android wifi acces qrcode
- fixed existing example and additional example added