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In PHP, a function is defined with the function keyword, followed by a unique function name and a pair of _______ containing optional parameters.

  • braces
  • brackets
  • parentheses
  • curly brackets
The correct option is: "parentheses." In PHP, a function is defined using the function keyword, followed by the function name and a pair of parentheses. Within the parentheses, parameters can be defined to accept inputs for the function. Learn more: https://www.php.net/manual/en/functions.user-defined.php
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A variable declared outside all functions in PHP is considered to have a ______ scope.

  • Local
  • Global
  • Static
  • Super
A variable declared outside all functions in PHP is considered to have a global scope. It means that the variable is accessible from anywhere in the PHP script, including inside functions. Global variables are defined outside of any function and can be accessed and modified throughout the entire script. However, it's generally recommended to use global variables sparingly and follow good programming practices to avoid potential issues related to variable scoping. Learn more: https://www.php.net/manual/en/language.variables.scope.php#language.variables.scope.global
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A constructor in a PHP class is defined using the __construct() method.

  • method
  • function
  • keyword
  • property
In PHP, a constructor in a class is defined using the __construct() method. The correct option is "method." The __construct() method is a special method that is automatically called when an object of the class is created. It is used to initialize the object's properties or perform any necessary setup tasks. For further details, refer to the PHP documentation on constructors: http://php.net/manual/en/language.oop5.decon.php
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You have been asked to set up a local development environment for PHP. What steps would you take?

  • Install a text editor.
  • Install a software stack like WAMP (Windows), MAMP (macOS), or LAMP (Linux).
  • Create a new PHP file and save it with a .php extension in the web server's root directory.
  • All of the above.
Setting up a local development environment for PHP involves several steps. You would typically start by installing a text editor or IDE to write your PHP scripts. Then, you'd install a software stack like WAMP, MAMP, or LAMP, which includes a web server, a database system, and the PHP interpreter. Finally, you would create a new PHP file and save it in the web server's root directory. Learn more: https://www.php.net/manual/en/install.general.php
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In PHP, the ______ function is used to replace some characters in a string with some other characters.

  • str_replace()
  • replace()
  • substr_replace()
  • swap()
The str_replace() function in PHP is used to replace some characters in a string with some other characters. It performs a search and replace operation on a given string. It replaces all occurrences of the specified search string with the replacement string. Learn more: https://www.php.net/manual/en/function.str-replace.php
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What function do you use in PHP to execute a query against a MySQL database?

  • mysqli_query()
  • mysql_query()
  • pdo_query()
  • execute_query()
In PHP, you can use the mysqli_query() function to execute a query against a MySQL database. This function takes two parameters: the connection object and the SQL query you want to execute. The SQL query can be any valid MySQL statement, such as SELECT, INSERT, UPDATE, or DELETE. The mysqli_query() function returns a result object for successful SELECT queries or a boolean value for other types of queries. It's important to use prepared statements or proper escaping techniques to prevent SQL injection vulnerabilities when executing user-supplied data as part of the query.
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In PHP forms, you can make a field required by using the required attribute in the HTML.

  • TRUE
  • FALSE
The statement is true. In PHP forms, you can make a field required by using the required attribute in the HTML. The required attribute is an HTML attribute introduced in HTML5 that can be added to form fields. When this attribute is included, the browser ensures that the field must be filled out by the user before the form can be submitted. The required attribute provides a client-side validation mechanism to enforce the field's requirement. While PHP can also perform server-side validation, the required attribute is an additional layer of validation provided by the HTML form itself. Learn more: https://www.w3schools.com/tags/att_input_required.asp
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To make a single-line comment in PHP, you can use ______ or ______ at the beginning of the line.

  • // or #
  • /* or */
  • All of the above
Single-line comments in PHP can be written using either double slashes (//) or a hash symbol (#) at the beginning of the line. The other options are not used for single-line comments. In PHP, everything after // or # on a line is considered a comment and is ignored by the PHP interpreter. Learn more: https://www.php.net/manual/en/language.basic-syntax.comments.php
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What is a common use case for Regular Expressions in PHP?

  • Validating user input, such as email addresses or phone numbers.
  • Sorting an array of strings in alphabetical order.
  • Converting a string to uppercase letters.
  • Counting the number of occurrences of a specific character in a string.
A common use case for regular expressions in PHP is validating user input, such as email addresses or phone numbers. Regular expressions provide a powerful and flexible way to define patterns for validating and ensuring the correctness of user-provided data. By using regular expressions, you can check if an input matches a specific pattern, such as the format of an email address or a phone number. This helps in maintaining data integrity and preventing incorrect or malicious inputs. Learn more: https://www.php.net/manual/en/book.regex.php
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To concatenate two strings in PHP, you use the ______ operator.

  • +
  • -
  • *
  • .
To concatenate two strings in PHP, you use the dot (.) operator. The dot operator is specifically used for string concatenation. It allows you to combine multiple strings into a single string. When the dot operator is used between two string values, it joins them together to form a concatenated string. Learn more: https://www.php.net/manual/en/language.operators.string.php
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