The unlink() function is dedicated for file system handling. Yes, we use the urlencode() function to be able to protect special characters. 2) What do the initials of PHP stand for? If the directive session.cookie_lifetime is set to 3600, the cookie will live until.. answer choices . PHP can handle forms, i.e. It is preferable to use crypt() which natively supports several hashing algorithms or the function hash() which supports more variants than crypt() rather than using the common hashing algorithms such as md5, sha1 or sha256 because they are conceived to be fast. However, the include() function gives a warning, and the PHP script continues to execute. The following is the syntax for using the foreach statement in PHP: PHP supports three types of data handling, and they are as shown in the following table: If you are looking to become proficient in PHP and learn all of the concepts thoroughly, make sure to check out Intellipaat’s PHP Course. Imagine you have a form field called 'var' on the form when the user clicks submit to the post form, you can then access the value like this: 36) How can we check the value of a given variable is a number? .Net interview questions and answers, Top 10 .Net interview questions and answers, 0-6 years experienced .Net , Linq, MVC,WEB API, ADO.Net The question was, can PHP session be set and read, used, if Cookies are disabled in users Browser? Constants can be defined easily in PHP by making use of the define() function. The first code is faster than the second code especially for large large sets of data. Final class means that this class cannot be extended and a final method cannot be overridden. Core PHP Interview Questions and Answers for Freshers and 1 to 5 Years Experienced Candidates with detailed answers and code samples are covered for you in this article. PHP development is one of the most coveted jobs in the world of web development as well. The crypt() function is widely used for this functionality as it provides a large amount of hashing algorithms that can be used. 83) How can we determine whether a PHP variable is an instantiated object of a certain class? Associative arrays, on the other hand, hold elements with string indices as shown below: Sessions are global variables that are stored on the server in the architecture. Following are some of them: The ‘final’ keyword, if present in a declaration, denotes that the current method does not support overriding by other classes. HTTP (hyper text transfer protocol) is a stateless protocol. If you do have any relevant experience, make sure to explain about what you learned and implemented during the certification course. Read on. The first expression is executed once at the beginning. 13) How is the comparison of objects done in PHP? There are eight primary data types in PHP as shown below: There are two main rules that you have to follow when naming a variable in PHP. PHP - 101 PHP interview questions and 523 answers by expert members with experience in PHP subject. PHP uses DES for encryption. There is no explicit declaration. 97) Is it possible to extend the execution time of a PHP script? The soundex() function can be used for spelling applications. The session_destroy() function is mostly used to destroy all of the session variables as shown below: PHP supports file operations by providing users with a plethora of file-related functions. Basic. 59) What does accessing a class via :: means? These algorithms include md5, sha1 or sha256. Session Introduction Session is a time period during which a person uses a machine for web browsing and then quits. Single-line comments can be used using the conventional ‘#’ sign. Sessions store data on the server, not on the browser like cookies. Core PHP Interview questions: Read Advanced PHP Hypertext Preprocessor is an open-source server-side scripting language that is widely used for the creation of dynamic web applications. Yes, typecasting is supported by PHP and can be done very easily. PHP variables are not intrinsic. This provides the basic means to differentiate a piece of PHP code from the other aspects of the program. PHP interview questions and answers.These questions are frequently asked in all IT Companies in India.This Questions are very helpfull for freshers. We just have to run the PHP CLI (Command-line Interface) program and provide the PHP script file name as the command-line argument, for example, php myScript.php, assuming php as the command to invoke the CLI program. Below is a great demonstrative videos created by www.questpond.com worth as watch. Session is started using session_start(). It allows users to access individual cookies and set them as per requirement. cannot be used. Discuss each question in detail for better understanding and in-depth knowledge of PHP To use a method, it should be defined within the class or the program scope. The difference lies in the name. 80) What are the two main string operators? It is only methods and classes that get to be final. Here, you can learn all of the concepts thoroughly and earn a course certificate as well! PHP cookies. This is used to check if there is a common presence of attributes and values between the objects in comparison. The main difference between sessions and cookies is that sessions are stored on the server, and cookies are stored on the user's computers in the text file format 26) What should we do to be able to export data into an Excel file? It is used to make the site password-protected. 31) How is it possible to know the number of rows returned in the result set? 3.The difference between sessions and cookies is that a session can hold multiple variables or objects, and you don’t have to set cookies for every variable. 1. 91) Is it possible to submit a form with a dedicated button? Is PHP a case-sensitive scripting language? PHP is a web language based on scripts that allow developers to dynamically create generated web pages. $_FILES['userfile']['error'] contains the error code associated with the uploaded file. Constructors are used in PHP as they allow you to pass parameters when creating a new object easily. It takes one input string and one optional parameter. One big advantage of session is that we can store any kind of object in it. This list includes PHP interview questions for 1 year experience, 2 year experience, 3 year experience, 4 year experience, 5 year experienced PHP developers and experienced PHP programmers. The purpose of PEAR is to provide: The soundex() function calculates the soundex key of a string. As the name suggests, if there is an occurrence of any sort of exception while the script is being compiled, it is called a compile-time exception. The use of the function session_start() lets us activating a session. The "/" means that the cookie is available in entire website (otherwise, select the directory you prefer). One very connected ASP.NET interview questions which is asked around session management is difference between session and viewstate. PHP Interview Question #5 Good job. PHP Scripts are loaded into memory and compiled into Zend OPCodes. 78) What does the scope of variables mean? != means inequality (TRUE if $a is not equal to $b) and !== means non-identity (TRUE if $a is not identical to $b). It is one of the frameworks and acting repositories that host all of the reusable PHP components. 46) what is the static variable in function useful for? PHP session module always uses a cookie for session management, therefore, since session management cookies are “session cookie” by default such as Cookie with 0 … Interview Questions & Answer on ASP.NET Cookies . There are many frameworks in PHP that are known for their usage. Required fields are marked *. The function func_num_args() is used to give the number of parameters passed into a function. $_FILES is an associative array composed of items sent to the current script via the HTTP POST method. This function is not supported in PHP 7.0 and above. Note: Properties cannot be declared as final. If the connection is successful, then you can write a sample query to verify. 87) How is it possible to parse a configuration file? Next up on these PHP interview questions, you need to understand a fundamental concept. Data structure multiple choice questions Career 12-19-2011 04:54 AM PHP multiple choice questions Preparation for MySQL test Preparation for MySQL test Rahul 11-9-2011 05:57 AM PHP multiple choice questions Preparation for PHP test Preparation for PHP test Kunal 11-9-2011 05:56 AM PHP multiple choice questions Good test. What is the meaning of PEAR in PHP? There are four basic steps that are used to create a new MySQL database in PHP. I told them not, beacuse PHP Sessions by default depends on setting a session cookie. For example: . By default, cookies are temporary and are erased if we close the browser. Submitting a form by selecting an option from the drop-down box with the invocation of an onChange event, The default time allowed for a PHP script to execute is 30 seconds mentioned in the. PHP Interview Tip #2 “During the interview of a potential candidate I am aiming to understand how updated they are with the new language features as well as their level of understanding of basic operations. 101) Explain whether it is possible to share a single instance of a Memcache between multiple PHP projects? $_COOKIE is an associative array of variables sent to the current PHP script using the HTTP Cookies. $GLOBALS is associative array including references to all variables which are currently defined in the global scope of the script. The cookie will expire after 30 days (86400 * 30). For the most part, all PHP variables only have a single scope. This feature is possible using the global keyword. 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