integrating barcode scanner into php application

Question

We have been developing web application in php  We need barcode scanner to be integrated into our application   Our application is divided into two modules  users and merchant   When user comes and scans the card  merchant should be identified the user by barcode number  Admin will give barcode number and that is being sent to the card manufacturer and the number will be assigned to the magnetic stripe   As i know scanner can acts as a key board  can you please tell the method to integrate barcode scanner into this php web based application

User · Answer

If you have Bluetooth  Use twedge on windows and getblue app on android  they also have a few videos of it  It s made by TEC-IT  I ve got it to work by setting the interface option to bluetooth server in TWedge and setting the output setting in getblue to Bluetooth client and selecting my computer from the Bluetooth devices list  Make sure your computer and phone is paired  Also to get the barcode as input set the action setting in TWedge to Keyboard Wedge  This will allow for you to first click the input text box on said form  then scan said product with your phone and wait a sec for the barcode number to be put into the text box  Using this method requires no php that doesn t already exist in your current form processing  just process the text box as usual and viola your phone scans bar codes  sends them to your pc via Bluetooth wirelessly  your computer inserts the barcode into whatever text field is selected in any application or website  Hope this helps

User · Answer

You can use AJAX for that  Whenever you scan a barcode  your scanner will act as if it is a keyboard typing into your input type  text  components  With JavaScript  capture the corresponding event  and send HTTP REQUEST and process responses accordingly

User · Answer

I ve been using something like this  Just set up a simple HTML page with an textinput  Make sure that the textinput always has focus  When you scan a barcode with your barcode scanner you will receive the code and after that a  enter   Realy simple then  just capture the incoming keystrokes and when the  enter  comes in you can use AJAX to handle your code

User · Answer

PHP can be easily utilized for reading bar codes printed on paper documents  Connecting manual barcode reader to the computer via USB significantly extends usability of PHP  or any other web programming language  into tasks involving document and product management  like finding a book records in the database or listing all bills for a particular customer   Following sections briefly describe process of connecting and using manual bar code reader with PHP      The usage of bar code scanners described in this article are in the   same way applicable to any web programming language  such as ASP    Python or Perl  This article uses only PHP since all tests have been   done with PHP applications    What is a bar code reader  scanner   Bar code reader is a hardware pluggable into computer that sends decoded bar code strings into computer  The trick is to know how to catch that received string  With PHP  and any other web programming language  the string will be placed into focused input HTML element in browser  Thus to catch received bar code string  following must be done   just before reading the bar code  proper input element  such as INPUT TEXT FIELD must be focused  mouse cursor is inside of the input field   once focused  start reading the code when the code is recognized  bar code reader usually shortly beeps   it is send to the focused input field  By default  most of bar code readers will append extra special character to decoded bar code string called CRLF  ENTER   For example  if decoded bar code is  12345AB   then computer will receive  12345ABENTER   Appended character ENTER  or CRLF  emulates pressing the key ENTER causing instant submission of the HTML form    lt form action  search php  method  post  gt       lt input name  documentID  onmouseover  this focus     type  text  gt   lt  form gt    Choosing the right bar code scanner  When choosing bar code reader  one should consider what types of bar codes will be read with it  Some bar codes allow only numbers  others will not have checksum  some bar codes are difficult to print with inkjet printers  some barcode readers have narrow reading pane and cannot read for example barcodes with length over 10 cm  Most of barcode readers support common barcodes  such as EAN8  EAN13  CODE 39  Interleaved 2 5  Code 128 etc   For office purposes  the most suitable barcodes seem to be those supporting full range of alphanumeric characters  which might be    code 39 - supports 0-9  uppercased A-Z  and few special characters  dash  comma  space                 code 128 - supports 0-9  a-z  A-Z and other extended characters   Other important things to note    make sure all standard barcodes are supported  at least CODE39  CODE128  Interleaved25  EAN8  EAN13  PDF417  QRCODE  use only standard USB plugin cables  RS232 interfaces are meant for industrial usage  rather than connecting to single PC  the cable should be long enough  at least 1 5 m - the longer the better  bar code reader plugged into computer should not require other power supply - it should power up simply by connecting to PC via USB  if you also need to print bar code into generated PDF documents  you can use TCPDF open source library that supports most of common 2D bar codes    Installing scanner drivers  Installing manual bar code reader requires installing drivers for your particular operating system and should be normally supplied with purchased bar code reader   Once installed and ready  bar code reader turns on signal LED light  Reading the barcode starts with pressing button for reading   Scanning the barcode - how does it work   STEP 1 - Focused input field ready for receiving character stream from bar code scanner     STEP 2 - Received barcode string from bar code scanner is immediatelly submitted for search into database  which creates nice  automated  effect     STEP 3 - Results returned after searching the database with submitted bar code     Conclusion  It seems  that utilization of PHP  and actually any web programming language  for scanning the bar codes has been quite overlooked so far  However  with natural support of emulated keypress  ENTER CRLF  it is very easy to automate collecting  amp  processing recognized bar code strings via simple HTML  GUI  fomular   The key is to understand  that recognized bar code string is instantly sent to the focused HTML element  such as INPUT text field with appended trailing character ASCII 13   ENTER CRLF  configurable option   which instantly sends input text field with populated received barcode as a HTML formular to any other script for further processing   Reference  http   www synet sk php en 280-barcode-reader-scanner-in-php  Hope this helps you

[php] integrating barcode scanner into php application?

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