What is Php: Definition and 77 Discussions

PHP is a general-purpose scripting language especially suited to web development. It was originally created by Danish-Canadian programmer Rasmus Lerdorf in 1994. The PHP reference implementation is now produced by The PHP Group. PHP originally stood for Personal Home Page, but it now stands for the recursive initialism PHP: Hypertext Preprocessor.PHP code is usually processed on a web server by a PHP interpreter implemented as a module, a daemon or as a Common Gateway Interface (CGI) executable. On a web server, the result of the interpreted and executed PHP code – which may be any type of data, such as generated HTML or binary image data – would form the whole or part of an HTTP response. Various web template systems, web content management systems, and web frameworks exist which can be employed to orchestrate or facilitate the generation of that response. Additionally, PHP can be used for many programming tasks outside of the web context, such as standalone graphical applications and robotic drone control. PHP code can also be directly executed from the command line.
The standard PHP interpreter, powered by the Zend Engine, is free software released under the PHP License. PHP has been widely ported and can be deployed on most web servers on almost every operating system and platform, free of charge.The PHP language evolved without a written formal specification or standard until 2014, with the original implementation acting as the de facto standard which other implementations aimed to follow. Since 2014, work has gone on to create a formal PHP specification.W3Techs reports that, as of April 2021, "PHP is used by 79.2% of all the websites whose server-side programming language we know."

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  1. Brief-Wishbone

    How to install PHP 8.x on centos 7?

    https://baransel.dev/post/how-to-install-php8-on-centos/ I've followed tutorials like this w/o avail. Everything works but when at last I do php -v, I see different version of php not 8.x.
  2. ergospherical

    Implementing secure login with Swift and a PHP API

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  3. evinda

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    Hello! (Wave) I wanted to ask you if you are familiar with html, css, javascript and php... What is it about? 🤔 Here is for example an exercise: Implement in HTML and CSS the site that is shown below (the specifications are marked with red). The site will be without functionality. How would...
  4. gind_id

    LOGPEARSONDIST and LOGNORMALDIST Function in PHP

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  5. J

    PHP What programming language is used to store Bank Acct's/money?

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  6. D

    PHP Correlate VBS and PHP for Server Use

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  7. kolleamm

    PHP How does PHP work with HTML files?

    For example instead of uploading an index.html to a server, would I just use index.php instead? Basically I want to be able to use PHP code to make my page more interactive.
  8. A

    Java How to communicate between javascript and php?

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  9. topsquark

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  10. Dave Ritche

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  11. Dave Ritche

    PHP Are HTML and CSS files necessary in the HTDOCS folder for PHP to work in XAMPP?

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  12. Dave Ritche

    PHP Understanding PHP: What is It & Why Do We Need It?

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  13. C

    PHP HTML, php and css code in ebook, proper formatting?

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  14. V

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  15. AliGh

    PHP How can I decode multiple layers of encoded php code?

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  16. Stephanus

    PHP Learning Web Programming: MySQL & PHP for Complex Websites

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  17. AliGh

    C# Can C# and PHP be used together for web development?

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  18. lonely_nucleus

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  19. Silicon Waffle

    PHP PHP: Deleted but still remains

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  20. DaveC426913

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  21. Jay1

    MHB A PHP Function To Perform Nth-Order Lagrange Interpolation

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  22. Jay1

    MHB Computing The Arbitrary-Precision Value Of N-Factorial In PHP

    The general integer factorial can be expressed by the equation: $$N! = \prod_{x~=~1}^N {x} = {1 \cdot 2 \cdot 3 \cdot ~~...~~ \cdot N}$$ This simply means that N-factorial is the sequential product of all integers from 1 to N. Below is a simple PHP function to compute the arbitrary-precision...
  23. Jay1

    MHB Computing The Arbitrary-Precision Nth Root Of Positive (X) In PHP

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  24. W

    PHP Mastering PHP and MySQL: A Beginner's Guide

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  25. J

    PHP Using PHP and cURL to submit POST requests to a website

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  26. Borek

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  27. Femme_physics

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  28. N

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  29. S

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  30. Chemicist

    PHP Does anyone in here write PHP?

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  31. R

    PHP Advice on how to set column widths in php

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  32. S

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    I'm going through a php tutorial right now and this math example below is driving me nuts. The exmaple was "((1 + 2 + $var1) * $var2) / 2 - 5", and all the rest of the code below is just me trying to figure it out. The answer ends up being "7", but to me it looks like PHP is sayding "24 / -3...
  33. E

    PHP PHP programming, image processing

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  34. B

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  35. B

    PHP Preventing SQL Injection in PHP Forms

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  36. B

    PHP Solving PHP Issue with FireBellyLawnCare.com CMS

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  37. C

    PHP str_replace function problem

    I have this PHP code to edit all HTML text to be displayed so that it won't appear as HTML but as standard text. <?php function htmlformat($sinput){ $newphrase = str_replace("<", "&lt;", $sinput); $newphrase = str_replace(">", "&gt;", $newphrase); $newphrase =...
  38. C

    Java Is there a javascript or php code to remove browsing history?

    I want to remove my clients browsing history every time they access new pages from my website. is there any code, i keep searching the net and i can't find one.
  39. J

    PHP PHP Constant Arrays: Is It Possible?

    I was wondering if was possible to create a constant array in php so it doesn't have to be reinitialized each time you enter a function. I guess one solution is to make it global but from a code maintenance perspective it makes since to put the array in with the function that uses it.
  40. T

    Can I Use WordPress with My ISP? Understanding PHP and MySQL Support

    I would like to start blogging using WordPress. I've heard that my ISP needs to support PHP and MySQL in order for this to work? I have no idea what either is but I have seen a few examples of small test-files (info.php) I can upload to my site and attemp to view them in order to find out if my...
  41. M

    PHP How Can I Replace My Static Website with a Dynamic Website Using PHP & MySQL?

    Hi, I already have a static website, and now I am trying to design a dynamic website. I used Apache, PHP, and MySQL and setup on my computer (hostname = localhost) and tested my member directory database. It worked fine that I can add, edit and delete, and update the data from table. I...
  42. Math Is Hard

    PHP How does PHP's session_start() function work?

    I'm a little confused about how PHP's session_start() function works. There's a tutorial I am reading here: http://www.tizag.com/phpT/phpsessions.php Here's an example they give of a counter script: <?php session_start(); if(isset($_SESSION['views'])) $_SESSION['views'] =...
  43. J

    PHP PHP -OO or Functional for speed/ knowledge demonstration?

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  44. O

    PHP Coding Help for CubeCart 3.0.17

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  45. J

    PHP PHP - Wrong datatype for second argument

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  46. M

    PHP Flash, PHP: Font sizes don't match

    Has anyone noticed that the font size for Flash and the font size for GD images in PHP don't give the same text size?
  47. H

    C/C++ Should I Learn PHP Before C++ for University?

    Hi, I was thinking of learning c++ as it would help me in my first year at university. However, someone told me that i should learn php first as it is easier and then learn php. Is that true? If not then are there any good tutorials on the internet for C++? Thanks.
  48. S

    PHP  PHP Syntax Error: Unexpected '>' Character

    <?php require("header.php"); $sql = "select entries. * , categories.cat FROM entries, categories WHERE entries.cat_id = categories.id ORDER BY dateposted DESC LIMIT 1;"; $result = mysql_query($sql); $row = mysql_fetch_assoc($result); echo "<h2><a href='viewentry.php?id=" ...
  49. Hootenanny

    PHP Using PHP eregi Function - Solve XML XSD Pattern Definition

    Hi all, I have this xml xsd pattern defintion; [A-Z,0-9]{5}[0-9][0,1,5,6][0-9]([0][1-9]|[1-2][0-9]|[3][0,1])[0-9][A-Z,0-9]{3}[A-Z]{2} and I need to convert it into an ereg regular expression to valid some input from a form. I've been at this for hours but can't seem to get anywhere...
  50. P

    PHP Help with php and this part of the code ?

    Ok here is the code below, I need to know what I need to change in this code for it to be able to be a clickable link... I have many layouts and want to add more but with so many pages, its a bit hard to go through 49 pages just to add one page. I already submitted this problem to web design...
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