PHP Code Snippets

Some PHP functions and code snippets useful for PHP Programmers and scripts.
New PHP Code Snippets might be added soon.

Using openssl_encrypt and openssl_decrypt in PHP
- How to use the openssl_encrypt and openssl_decrypt functions to encrypt and decrypt password in PHP
Simple arithmetic calculator in PHP
- PHP and HTML code to make a simple arithmetic calculator with the basic operators
Mysql SELECT JOIN tables on two different Databases
- PHP AND MySQL code example that shows how to make a SQL select that joins tables from different databases.
Output or Force Download MP3 with PHP
- PHP code-snippets to output, or force download MP3 audio file with PHP
Counter Page Visits
- PHP Script to make a counter for accessed pages, with data stored in text file on server
Zodiac Signs PHP code
- Simple function to get the Zodiac sign in PHP, code snippets
Calculate the Age in PHP
- PHP code snippets to calculate the age between two dates, php course: CoursesWeb.net
Get the difference between two Dates - Time and Date
- PHP function to Get the difference between two Dates - Time and Date, days, hours, minutes, seconds
Read ZIP archive data with PHP
- Read ZIP archive data with PHP, get files name, actual filesize, compressed size
Extract / Unzip ZIP archive files with PHP
- Extract, Unzip ZIP archive files with PHP, a function to extract the archived files of a ZIP archive
Create ZIP file archive with PHP
- Create ZIP file archive with PHP, a simple PHP function to create and add files in ZIP archive
Get Lower, Higher, and Closest Number
- Get Lower, Higher, and Closest Number, php function, returns an array with lower, higher, closest number
Get Closest Number
- Get the Closest Number, simple php function, returns the closest number
Get all the unique numbers from two-dimensional array
- PHP function to Get all the unique numbers from two-dimensional array
PHP Image with text on New Lines
- PHP function to create Images with PHP, with text displayed on New Lines
Get visitor IP in PHP
- A function to get the IP of the visitor, user, in PHP. PHP code-snippets
Save image on server from external URL
- PHP Code Snippet useful to copy, save image on server from external URL
Split an alphanumeric string into Array in PHP
- Function to Split an alphanumeric string into array, PHP code snippets
XML sitemap with data from MySQL
- PHP script to create XML sitemap with data, URL addresses saved in MySQL database
Recursive function to create Multi-Level Menu in PHP
- Recursive function to create Multi-Level Menu in PHP, horizontal and vertical dropdown menu
Chaining Static and Public Methods in PHP
- Code snippets Example of Chaining a Static and a Public Class Method in php
Dynamically PHP Maps with Rectangle, Parallelogram, and Rhomb Shapes
- PHP code snippets to create Dynamically Maps with Rectangle, Parallelogram, and Rhomb Shapes
Merge Multiple Files, Line by Line
- PHP function to Merge Multiple Files, Line by Line. Gets array with lines merged
Sort an entire multi-dimensional Array
- PHP function to Sort an entire multi-dimensional Array, by one element of it
Image in PHP with background in two colors
- How to create Image in PHP with background in two colors, drawing rectangle
Create Array of Unique Random Numbers or Letters
- PHP function to Create Array of Unique Random Numbers or Letters, code-snippets
Get the Timestamp of First and Last day of Month
- PHP function to Get the Timestamp of First and Last day of specified Month
Convert XML to JSON in PHP
- Simple PHP function to Convert XML content to JSON string, or to Array, in PHP
Keep the first Nr IMG tags, Strip all the others
- PHP code snippet, function to Keep the first Nr IMG tags, Strip all the others
innerHTML in PHP
- PHP code snippet, innerHTML in PHP, equivalent of innerHTML from JavaScript. Get HTML content
Force Download files with PHP
- Force to Download various type of files with PHP, doc, jpg, pdf, html, ppt, xls, xml, etc.
Delete multiple consecutive characters and Split long words
- PHP function to delete multiple consecutive characters and split long words from string text.
Interpret / Parse / Replace variable in string with value
- How to to Interpret, Parse, Replace variable in string with its value defined in php. Using strtr or preg_replace_callback
Get Time Elapsed
- PHP function to Get Time Elapsed from a specified date/time till now, or till other specified date/time

Daily Test with Code Example

HTML

CSS

JavaScript

PHP-MySQL

Which tag is used to add lists into <ul> and <ol> elements?

<ul>
 <li>http://coursesweb.net/html/</li>
 <li>http://coursesweb.net/css/</li>
</ul>

Which value of the "display" property creates a block box for the content and ads a bullet marker?

block list-item inline-block

.some_class {
  display: list-item;
}

Which instruction converts a JavaScript object into a JSON string.

JSON.parse() JSON.stringify eval()

var obj = {
 "courses": ["php", "javascript", "ajax"]
};
var jsonstr = JSON.stringify(obj);
alert(jsonstr);    // {"courses":["php","javascript","ajax"]}

Indicate the PHP class used to work with HTML and XML content in PHP.

stdClass PDO DOMDocument

$strhtml = '<body><div id="dv1">CoursesWeb.net</div></body>';
$dochtml = new DOMDocument();
$dochtml->loadHTML($strhtml);
$elm = $dochtml->getElementById("dv1");
echo $elm->nodeValue;    // CoursesWeb.net

PHP Code Snippets

Php-mysql Course

Daily Test with Code Example

HTML

CSS

JavaScript

PHP-MySQL

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