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You have a function in your PHP script that's supposed to return a value, but it's not returning as expected. How would you debug this?

  • Enable error reporting in PHP settings.
  • Check for syntax errors in the function.
  • Add debugging statements like var_dump() or echo within the function.
  • Ensure the function is properly called and any necessary input arguments are provided.
To debug a function that's not returning the expected value, you can add debugging statements like var_dump() or echo within the function to check the intermediate values and flow. You should also ensure that the function is properly called, and any required input arguments are provided. Additionally, enabling error reporting in PHP settings can help identify any syntax or runtime errors. Learn more: https://www.php.net/manual/en/functions.debugging.php
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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
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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.
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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
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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
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To access data from the $_POST superglobal in PHP, you can use $_POST['fieldname'] where 'fieldname' is the name of the ______ you wish to access.

  • Superkey
  • Request key
  • Input name
  • Variable name
To access data from the $_POST superglobal in PHP, you can use $_POST['fieldname'] syntax, where 'fieldname' is the name attribute of the input element in the HTML form. This allows you to retrieve the value submitted for that specific field. For example, if your input has name="username", you would access it using $_POST['username']. Learn more: https://www.php.net/manual/en/reserved.variables.post.php
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What are some common practices in PHP when using constructors in classes?

  • Assigning default values to properties
  • Injecting dependencies through constructor parameters
  • Performing validation on input values
  • All of the above
Common practices in PHP when using constructors in classes include assigning default values to properties, injecting dependencies through constructor parameters, and performing validation on input values. The correct option is "All of the above." Constructors are an appropriate place to perform tasks related to initializing the object and ensuring its proper state. These practices promote code organization, maintainability, and the adherence to best practices. For more information, consult the PHP documentation on constructors: http://php.net/manual/en/language.oop5.decon.php
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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
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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
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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
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