Category Archives: PHP

PHP: Hypertext Preprocessor (PHP)

PHP

Fixing the “Duplicate Entry ‘0’ for Key ‘PRIMARY’ INSERT INTO wp_usermeta” Error in WordPress

Posted on by Muhammad Faridul Islam

If you’re a WordPress user, you may have encountered the frustrating error: “Duplicate entry ‘0’ for key ‘PRIMARY’ INSERT INTO scw_usermeta“. This error typically occurs when there’s an issue with the primary key in your database tables, particularly in the wp_posts or wp_usermeta tables. In this article, we’ll explore the root cause of this error and provide a step-by-step solution to […]

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PHP, WordPress

Images in if-else

Posted on by Muhammad Faridul Islam

If you want to see different type of image & size in different post then you may use following code- < ?php if ($image = get_post_meta($post->ID, ‘slide’, true)) { ?> <img width=”617″ height=”350″ src=”<?php echo $image; ?>” alt=”Image” /> < ?php } else { ?> < ?php $image = get_post_meta($post->ID, ‘simg’, true) ; ?> <img width=”80″ […]

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AJAX, MySQL, PHP

A to Z PHP and MySQL Tutorial

Posted on by Muhammad Faridul Islam

PHP MySQL Connect to a Database Create a Connection to a MySQL Database Before you can access data in a database, you must create a connection to the database. In PHP, this is done with the mysql_connect() function. Syntax mysql_connect(servername,username,password); Parameter Description servername Optional. Specifies the server to connect to. Default value is “localhost:3306” username […]

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PHP

Template processor

Posted on by Muhammad Faridul Islam

A template processor (also known as a template engine or a template parser) is software or a software component that is designed to combine one or moretemplates with a data model to produce one or more result documents.  For purposes of this article, a result document is any kind of formatted output, including documents, web pages, or source code, either in whole or in fragments. […]

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PHP

List of PHP editors

Posted on by Muhammad Faridul Islam

This article contains a list of text editors with features specific to the PHP scripting language. Free editors Cross Platform ActiveState Komodo Edit Bluefish – Supports any protocol that is supported by GnomeVFS. (SSH…) Eclipse – PHPEclipse and PHP Development Tools projects. With additional plugins supports SVN, CVS, Database modelling, SSH/FTP access, Database Navigation, Trac integration, and others. Emacs – Advanced text editor. The nXhtml addon has […]

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PHP

List of PHP accelerators

Posted on by Muhammad Faridul Islam

Alternative PHP Cache Alternative PHP Cache (APC) is a free, open source framework that optimizes PHP intermediate code and caches data and compiled code from the PHP bytecode compiler in shared memory. APC is quickly becoming the de-facto standard PHP caching mechanism as it will be included built-in to the core of PHP starting with PHP 6. Home […]

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PHP

PHP accelerator

Posted on by Muhammad Faridul Islam

A PHP accelerator is an extension designed to boost the performance of software applications written using the PHP programming language. Most PHP accelerators work by caching the compiledbytecode of PHP scripts to avoid the overhead of parsing and compiling source code on each request (some or all of which may never even be executed). For best performance, caching is to shared […]

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PHP

PHP

Posted on by Muhammad Faridul Islam

PHP: Hypertext Preprocessor is a widely used, general-purpose scripting language that was originally designed for web development to produce dynamic web pages. For this purpose, PHP code is embedded into the HTML source document and interpreted by a web server with a PHP processor module, which generates the web page document. As a general-purpose programming […]

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