The PHP $_SERVER superglobal contains information about headers, paths, and script locations.
- TRUE
- FALSE
The correct option is 1. The $_SERVER superglobal in PHP contains information about headers, paths, and script locations. It provides an array of server and execution environment information. The elements within the $_SERVER array provide details such as the server name, script filenames, request methods, and more. This superglobal is useful for retrieving server-related information when processing requests and building dynamic responses. Developers can access specific elements of the $_SERVER array to access and utilize the available server-related information in their PHP scripts. Learn more: https://www.php.net/manual/en/reserved.variables.server.php
A PHP class can have more than one constructor.
- No
- Yes
- Depends on the PHP version
- Only if the class is abstract
In PHP, a class cannot have more than one constructor. The correct option is "No." Unlike some other programming languages, PHP does not support multiple constructors within a single class. However, you can achieve similar functionality by using optional parameters or method overloading. For further details, refer to the PHP documentation on constructors: http://php.net/manual/en/language.oop5.decon.php
You are writing a PHP script and you need to collect form data, but you don't know if the data was sent using the GET or the POST method. How would you do this using the $_REQUEST superglobal?
- Check if the $_REQUEST variable is empty to determine the method.
- Use the isset() function on the $_REQUEST['method'] key.
- Use the $_SERVER['REQUEST_METHOD'] variable to determine the method.
- Use the $_GET and $_POST superglobals separately to handle each method.
To collect form data when you are unsure of the method used (GET or POST), you can use the $_REQUEST superglobal. The $_REQUEST superglobal combines the values of both GET and POST requests. To determine the method, you can use the $_SERVER['REQUEST_METHOD'] variable, which holds the HTTP request method used to access the page. If it contains the value 'GET', the data was sent using the GET method. If it contains 'POST', the data was sent using the POST method. Learn more: https://www.php.net/manual/en/reserved.variables.request.php, https://www.php.net/manual/en/reserved.variables.server.php
The PHP files should be saved with a ______ extension for the server to parse them.
- .html
- .js
- .php
- .py
PHP files should be saved with a .php extension. The PHP interpreter processes files with this extension, executing any PHP code contained within and sending the resulting output (usually HTML) to the client's browser. Learn more: https://www.php.net/manual/en/tutorial.firstpage.php
Which of the following are ways to upload a file in PHP?
- Using an HTML form with the enctype attribute set to "multipart/form-data" and an input element of type "file"
- Using the upload() function in PHP
- Using the file_get_contents() function to read the file contents and process them
- Using the include() function to include the file in the PHP script
In PHP, one of the ways to upload a file is by using an HTML form with the enctype attribute set to "multipart/form-data" and an input element of type "file". This allows the user to select a file to upload from their local system. This file will then be sent to the server for processing. The other options mentioned are not valid methods for file upload in PHP.
What does accessing a class via :: mean?
- Static access
- Dynamic access
- Private access
- Protected access
Accessing a class via :: represents static access, allowing you to access static properties or invoke static methods of a class. Learn more: http://php.net/manual/en/language.oop5.static.php
To access a global variable inside a function using $GLOBALS, you can use $GLOBALS['variable_name'] where 'variable_name' is the name of the ______.
- Global variable
- Local variable
- Function
- Class variable
The correct option is 1. To access a global variable inside a function using $GLOBALS, you can use $GLOBALS['variable_name'], where 'variable_name' is the name of the global variable you want to access. By referencing the variable name as a key in the $GLOBALS array, you can retrieve the value of the global variable from within the function. This allows you to access global variables without the need for the global keyword, which is required to access global variables within the function's local scope. However, it is generally recommended to use global variables sparingly and consider passing variables as parameters or using object-oriented design principles for better code organization and maintainability. Learn more: https://www.php.net/manual/en/reserved.variables.globals.php
In PHP, you can set a cookie using the setcookie() function, which takes the name of the cookie, its value, and its expiration time as ______.
- parameters
- arguments
- inputs
- attributes
The setcookie() function in PHP takes the name of the cookie, its value, and its expiration time as arguments. These arguments allow you to define the properties of the cookie such as its name, value, and when it should expire. More information: http://php.net/manual/en/function.setcookie.php
You have a PHP script and you need to access the information stored in a cookie. How would you do this?
- $_COOKIE
- $_REQUEST
- $_SESSION
- $_SERVER
To access the information stored in a cookie within a PHP script, you can use the $_COOKIE superglobal array. This array contains the names and values of the cookies sent by the client in the HTTP request. By accessing $_COOKIE['cookie_name'], you can retrieve the specific information stored in the cookie. See more at: http://php.net/manual/en/reserved.variables.cookies.php
You have a PHP script and you are getting an error when trying to send an email. How would you troubleshoot this issue using mail functions?
- Check the error message returned by the error_get_last() function and review the function usage
- Update the PHP version and related extensions
- Reinstall the mail server software
- All of the above
To troubleshoot an error when sending an email using mail functions in PHP, you can check the error message returned by the error_get_last() function. This function retrieves the last PHP error message. By reviewing this error message, you can gain insights into the issue that occurred during the email sending process. Additionally, you can consider updating the PHP version and related extensions or reinstalling the mail server software if the issue persists. These troubleshooting steps can help identify and resolve errors encountered during the email sending operation in your PHP script.