PHPis among the projects of ASF (Apache Software Foundation). It is freeand provided under open source permit, meaning that people can use itas they wish. The "permit" is for only covering thecommercial code use. As such, PHP is a broadly employedgeneral-purpose scripting interpreter and language, which isparticularly used for developing dynamic web pages. Usually, it isused for extracting information out of databases and presenting it onweb pages PHP can be entrenched into the HTML. It never consumersCPU memory or time on the other hand, in CGI, the process isexecuted and created, and it guzzles huge amounts of CPU memory andtime (W3schools.com, 2016).
Beforea web page is sent to the subscriber who ordered it, the server callsthe interpreter (PHP) to assess the script and conduct the processescalled for within the PHP script. HTML pages, which encompass a PHPscript are usually given file names suffixes of ".php3,"".phtml," or "PHP." In HTML documents, PHPscripts are enclosed in special PHP tags hence, the authors can jumpout and in the PHP modes in HTML files rather than having to dependon the huge amount of codes to output the HTML.
Thetraditional method to adding connectivity or interactivity was usingthe CGI system. The issue with CGI is the fact that all new requestsand orders necessitate the servers to begin new processes in thekernels that use both CPU memory and time, making the scripts of CGImore sluggish this makes several concurrent CGI scripts runextremely slowly. Php resolves this issue by being a section of thewebsite server itself.
Thenext reason of using PHP is the fact that it is free. It refers to anOpen-Source solution, easily or freely accessible for a broad rangeof platforms. PHP is a complete-featured setting, which has beenpresent for many years besides, it is in widespread usage on theweb. All users can download both the executables and source code andinstall them for free. Experienced programmers continuously improvethe PHP from all over the globe. Currently, it is accessible forevery major platform thus, if one is on a tight budget, it is asuitable alternative to creating dynamic data-driven webs.
PHPis a simple language. It is a blend of Perl and C, taking the mostexcellent properties from both. Among the most significant andstrongest feature of PHP is its essential database support for anextensive variety of databases (MySQL, Sybase, Direct MS-SQL,Informix, MySQL, Oracle, InterBase, Hyperwave, Velocis, Ovrimos,Solid, Adabas D, Empress, and Ingress, among others). The propertypermits access to databases directly via SQL statements. PHP may beused on every major operating system, inclusive of Linux, MicrosoftWindows, RISC OS, many UNIX variants (comprising OpenBSD, HP-UX, andSolaris), and Mac OS X (W3schools.com, 2016). Also, PHP has supportfor many web servers today, which include Personal Web Server,iPlanet servers, Microsoft IIS (Internet Information System), Apache,Netscape, Caudium, Oreilly Web Pro server, and OmniHTTPd.
ExamplesPHP Screenshot Labs
ScreenshotLab 2: PHP Switch Statement
PHPis primarily focused on the server-side scripting hence, one can doanything, which all other CGI programs can perform, like generatingdynamic web-page content, sending and receiving cookies, andcollecting form data. Also, PHP is perfect for disk access, textmanipulation, database access, and networking.
PHPis an open-source scripting, free language. It is simple to createand offers powerful control. The language also provides robustsupport for a broad variety of databases. Additionally, PHP isaccessible for an extensive range of platforms. It may be applied toevery operating system, inclusive of Linux and Microsoft, amongothers. With PHP, one would have "liberty of choice" abouta platform, a website server, a database, and an operating system.Interestingly, an individual can quickly develop a dynamic websiteand a database through using such kinds of public, free domainsoftware. Internet liberated information and knowledge from monopolyby a group of individuals to the residents (W3schools.com, 2016).Currently, information and knowledge are open to everybody. Peoplecan acquire data and knowledge much quickly than previously, and theycan arrange them in a manner they like through employing newtechnology, which is free or costs them less.