Posts Tagged ‘Questions’


How To Check Your PHP Installation? Please explain with example

PHP provides two execution interfaces: Command Line Interface (CLI) and Common Gateway Interface (CGI). If PHP is installed in the php directory on your system, you can try this to check your installation:

* Run “phpphp -v” command to check the Command Line Interface (CLI).
* Run “phpphp-cgi -v” command to check the Common Gateway Interface (CGI).

If you see PHP printing the version information on your screen for both commands, your installation is ok. Open a command window and run the commands below:

C:>phpphp -v
PHP 5.2.2 (cli) (built: May 2 2007 19:18:26)
Copyright (c) 1997-2007 The PHP Group
Zend Engine v2.2.0 Copyright (c) 1998-2007 Zend Technologies

C:>phpphp-cgi -v
PHP 5.2.2 (cgi-fcgi) (built: May 2 2007 19:18:25)
Copyright (c) 1997-2007 The PHP Group
Zend Engine v2.2.0 Copyright (c) 1998-2007 Zend Technologies

credit:www.globalguideline.com

How To Run a PHP Script? Please explain with example

A standard alone PHP script can be executed directly with the PHP Command Line Interface (CLI). Write the following script in a file called hello.php:

<?php echo “Hello world!”; ?>

This script can be executed by CLI interface like this:

phpphp hello.php

You should see the “Hello world!” message printed on your screen.

credit:www.globalguideline.com

How to Find a Substring from a Given String in PHP? Please explain with example

To find a substring in a given string, you can use the strpos() function. If you call strpos($haystack, $needle), it will try to find the position of the first occurrence of the $needle string in the $haystack string. If found, it will return a non-negative integer represents the position of $needle. Othewise, it will return a Boolean false. Here is a PHP script example of strpos():

<?php
$haystack1 = “2349534134345globalguideline16504381640386488129″;
$haystack2 = “globalguideline234953413434516504381640386488129″;
$haystack3 = “guideline234953413434516504381640386488129ggl”;
$pos1 = strpos($haystack1, “globalguideline”);
$pos2 = strpos($haystack2, “globalguideline”);
$pos3 = strpos($haystack3, “globalguideline”);
print(“pos1 = ($pos1); type is ” . gettype($pos1) . “n”);
print(“pos2 = ($pos2); type is ” . gettype($pos2) . “n”);
print(“pos3 = ($pos3); type is ” . gettype($pos3) . “n”);
?>

This script will print:

pos1 = (13); type is integer
pos2 = (0); type is integer
pos3 = (); type is boolean

“pos3″ shows strpos() can return a Boolean value

credit:www.globalguideline.com

How To Download and Install PHP on Windows?

PHP is one of the most popular languages to develop dynamic Web pages. It supports all major database servers, including: MySQL, MS SQL Server, Oracle, mSQL, Sybase, etc.

If you are developing a Web application that uses PHP and needs to access MS SQL Server, you should go download and install PHP to your local machine to practice PHP and SQL Server connection. The best way to download and install PHP on Windows systems is to:

* Go to http://www.php.net, which is the official Web site for PHP.
* Click the Downloads menu link. You will see the PHP download page.
* Go to the “Windows Binaries” section, and click “PHP 5.2.3 zip package” link to download PHP binary version for Windows in ZIP format.
* Save the downloaded file, php-5.2.3-Win32.zip with 9,847,499 bytes, in C:Temp directory.
* Unzip the downloaded file into directory C:php.

You are done. No need to run any installation program.

source:stackoverflow.com
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