web development Archives - BinaryTides

Php array of iso 639-1 language codes and names

Silver Moon — Thu, 22 Nov 2012 13:14:01 +0000

Here is a php array containing the language codes and language names as specified by the iso 639-1 standard. Useful when . <?php /** ISO 639-1 Language Codes Useful in Locale analysis References : 1. http://en.wikipedia.org/wiki/List_of_ISO_639-1_codes 2. http://blog.xoundboy.com/?p=235 */ $language_codes = array( 'en' => 'English' , 'aa' => 'Afar' , 'ab' => 'Abkhazian' , 'af'... Read More »

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Convert pdf to image with imagemagick in php

Silver Moon — Thu, 15 Nov 2012 03:58:32 +0000

Imagick In a previous article we saw how to use to create a snapshot or thumbnail of the pdf. Now we are going to do the same in php using the Imagick class which provides the bindings for imagemagick library inside php. The library is available in the form of a class Imagick that does... Read More »

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Php curl tutorial – making http requests in php

Silver Moon — Tue, 06 Nov 2012 16:14:34 +0000

Curl According to the official website. curl is a command line tool for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, Telnet and TFTP. curl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload,... Read More »

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6 tips to learn PHP fast and effectively

Silver Moon — Wed, 17 Oct 2012 14:11:58 +0000

Php is today the most widely used language/platform for development of web based applications and websites. At the same time it is the easiest to learn and use. There are lots of free tutorial websites out there that can be followed to learn php without much effort. Along with these tools having the right approach... Read More »

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Fill text templates using arrays in php

Silver Moon — Sat, 22 Sep 2012 12:12:35 +0000

Text templates are often used to generate content like notification emails, invoices filled with the details of a customer or user. The best example would be a bulk email program that sends out emails to multiple users filling the details of the particular user in every individual mail. Text templates have place holders for fields... Read More »

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PHP – How to Parse Html DOM with DOMDocument

Silver Moon — Mon, 17 Sep 2012 13:26:40 +0000

Domdocument The domdocument class of Php is a very handy one that can be used for a number of tasks like parsing xml, html and creating xml. It is documented here. In this tutorial we are going to see how to use this class to parse html content. The need to parse html happens when... Read More »

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Php function to add st, nd, rd, th to the end of numbers

Silver Moon — Sat, 04 Aug 2012 10:20:20 +0000

Often numbers are to be written with a proper suffix, like 1st, 2nd, 3rd, 15th, 21st and so on. So here is a quick function to do the same for a number. Technique 1 /* This function will add st, nd, rd, th to the end of numbers */ function ordinal($i) { $l = substr($i,-1);... Read More »

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3 ways to serialize variables in php

Silver Moon — Sat, 14 Jul 2012 11:06:09 +0000

The idea behind serializing a variable is to create a storable string format of it, such that the same variable can be recreated later when required using the string. 1. serialize and unserialize These are the traditional functions to serialize and unserialize data in PHP. $a = array('a' => 'Apple' ,'b' => 'banana' , 'c'... Read More »

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PHP : Add Login with Github to your website

Silver Moon — Fri, 13 Jul 2012 10:58:31 +0000

Github Login Github has become a very popular social login on websites related to programming and development. Github itself is a big storehouse of opensource projects and community of developers. Github oAuth documentation can be found at http://developer.github.com/v3/oauth/. Register website with Github oAuth The first thing to do would be to register your website with... Read More »

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Use clientside ssl certificate with curl and php

Silver Moon — Wed, 13 Jun 2012 12:50:44 +0000

Clientside certificates are often used in soap webservices. For example the wsdl file link might require a clientside certificate. The server throws an error like this : HTTP Error 403.7 - Forbidden: SSL client certificate is required. Curl Command To use clientside certificate with curl , test the following command curl --cert certificate_file.pem https://www.example.com/some_protected_page or... Read More »

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40+ Useful Php tips for beginners – Part 3

Silver Moon — Sat, 07 Apr 2012 09:19:30 +0000

Part 2 26. Avoid direct SQL query , abstract it $query = "INSERT INTO users(name , email , address , phone) VALUES('$name' , '$email' , '$address' , '$phone')"; $db->query($query); //call to mysqli_query() The above is the simplest way way of writing sql queries and interacting with databases for operations like INSERT, UPDATE, DELETE etc. But... Read More »

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40+ Useful Php tips for beginners – Part 2

Silver Moon — Sat, 07 Apr 2012 09:13:44 +0000

Part 1 11. Do not gzip output in your application , make apache do that Thinking of using ob_gzhandler ? No dont do that. It doesnt make sense. Php is supposed to write your application. Dont worry about how to optimise data transfer between server and browser inside Php. Use apache mod_gzip/mod_deflate to compress content... Read More »

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40+ Useful Php tips for beginners – Part 1

Silver Moon — Thu, 29 Mar 2012 08:44:56 +0000

In this series we are going to look into some useful tips and techniques that can be used to improve and optimise your php code. Note that these php tips are meant for beginners and not those who are already using mvc frameworks etc. The Techniques 1. Do not use relative paths , instead define... Read More »

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Execute shell commands in PHP

Silver Moon — Tue, 27 Mar 2012 08:36:59 +0000

Like any other language php applications often need to execute system commands like they are run from the terminal/console/commandline. Php has multiple functions to do this task. Lets take a look at each of these 1. system "system() is just like the C version of the function in that it executes the given command and... Read More »

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Php : create pdf from html using mpdf

Silver Moon — Sun, 27 Nov 2011 10:21:13 +0000

MPDF Many php applications need to create pdf of documents like invoice , receipt and even id card etc. In this article we shall create a pdf invoice using the mpdf pdf creation library. Mpdf is made in php without any other external library. Mpdf parses css much better than any other free pdf libraries... Read More »

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Php get zip error message from error number

Silver Moon — Thu, 24 Nov 2011 09:13:06 +0000

Php functions like zip_open return an error number if they fail. To get the corresponding error message from the error number , use the following function. function zip_error_message($errno) { // using constant name as a string to make this function PHP4 compatible $zipFileFunctionsErrors = array( 'ZIPARCHIVE::ER_MULTIDISK' => 'Multi-disk zip archives not supported.', 'ZIPARCHIVE::ER_RENAME' => 'Renaming... Read More »

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PHP strtotime in 64 bit environment

Silver Moon — Sun, 23 Oct 2011 09:00:57 +0000

The strtotime function is used to convert a date in various formats to a timestamp. However its behaviour is different based on architecture it is running on, whether 32bit or 64bit. Lets take a few examples : In 64 bit environment desktop:~$ php -a Interactive shell php > echo strtotime("0000-00-00 00:00:00"); -62170005200 php > echo... Read More »

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Mysql autoincrement column that resets every month

Silver Moon — Sat, 22 Oct 2011 10:17:20 +0000

The autoincrement feature in mysql allows us to create numeric fields that automatically increment by 1 for every row inserted. It does it atomically so we don't have to worry about any duplicates or collision. However, there are situations when we need an autoincrement field to reset at regular intervals like every month or so.... Read More »

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How to List foreign keys in Mysql

Silver Moon — Sat, 05 Sep 2009 16:00:46 +0000

information_schema The following query will list out the foreign keys in mysql. It finds it out from the information_schema database. select concat(table_name, '.', column_name) as 'foreign key', concat(referenced_table_name, '.', referenced_column_name) as 'references' from information_schema.key_column_usage where referenced_table_name is not null; The output is a clean table listing out all foreign keys from all databases +-----------------------+-------------+ |... Read More »

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Import mysql dump files with view definer and sql security

Silver Moon — Sat, 22 Aug 2009 11:08:58 +0000

Views and mysqldump A little back I tried to backup a database from my webhost and restore it on my localhost mysql. It had a few views. The import of the sql file seemed to work fine. But on accessing the views in phpmyadmin mysql gave the error : #1449 - There is no 'projects'@'localhost'... Read More »

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