Error Handling in PHP

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Error handling is the process of catching errors from the program and then taking appropriate action. Before proceeding for error handling you should get to know how many types of errors occurred in PHP. Notices: These are non-critical errors that occurred while executing a script - for example, accessing a variable that has not yet been defined. By default, such errors are not displayed to the user at all - although, as you will see, you can change this default behavior. Warnings: These are more serious errors - for example, attempting to use a file (using include() method) which does not exist. By default, these errors are displayed to the user, but they do not result in script termination. Fatal Errors: These are critical errors - for example, creating an…
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Managing Sessions & Cookies

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The basic task of both cookies and sessions is to store visitor data so that it can be accessed by every page on a website. Cookies: Cookies are small text files that are stored in the visitor's browser for a specific time or for a long  -lifespan. Cookies can be edited by the visitor.  in short Cookies are client-side files that contain user information. Sessions: Sessions are small files that are stored on the website's server. Sessions have a limited lifespan, they expire when the browser is closed or logged out from the session. Sessions cannot be edited by the visitor or user. Session Max life time is 1440 Seconds(24 Minutes) as defined in php.ini file however you may change it accordingly In short, cookies serve on the visitor's computer…
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Require () and Include () function in PHP

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The Include() and require() statements are used to insert codes written in other files, in the flow of  execution. The main of using include and require functions to integrate one page code or content into another page. You can maintain usually some repeated functionality in the form of PHP file and finally you can call it wherever you want. See, the following example demonstrates how to integrate a menu content in other pages of PHP. There is a page in menu.php and it can be included in some other pages of the website. Menu.php <a href=”index.php”>Home</a> <a href=”services.php”>Services</a> <a href=”about.php”>About Us</a> <a href=”contact.php”>Contact Us</a> The following page index.php uses above menu.php content. See the below code how it follows <head> <title>My Web page</title> </head> <body> <?php include  “menu.php “; ?> </body> Difference between Include…
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The For Loop

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PHP for loop can be used to traverse set of code for the specified number of times. For example if you want to repeat something ten or twenty times. It should be used if number of iteration is known otherwise I recommend you to use while loop. Syntax: for (Initialization; Condition; Progressive) { //set of statements to be executed; } Parameters: Initialization: Initialize the loop counter value Condition: Check for condition. If it evaluates to TRUE, the loop continues. If FALSE then the loop ends. Progressive: Increase / Decrease the loop counter value Example: for($var=1; $var<=20; $var=$var+1) { echo $var ." "; } Output: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Example: to display 1st 20 natural…
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PHP – Date / Time Functions

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When working in any programming language, dealing with dates and time is a simple task. That is, until time zones have to be supported. PHP's time () function gives you all the information that you need about the current date and time. It requires no arguments but returns an numeric value. If you will call to time() function which will return a set of numeric values which is difficult to understand. So to make it easy we can have time format along with the date() function. <?php $today = date("d/m/Y"); echo "Today is ".$today; ?> We can use different time format with separator like d-m-Y, d.m.Y and so on. Display Current Date and Time:  We can use the following characters to format the time string: <?php echo date("h:i:s") . "<br>";…
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