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How can you start a session in PHP?

  • session_start()
  • start_session()
  • initialize_session()
  • open_session()
To start a session in PHP, you can use the session_start() function. This function initializes a new session or resumes an existing session. It needs to be called at the beginning of your PHP script before any session variables are accessed. For more details, refer to: http://php.net/manual/en/function.session-start.php
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How many times will the block of code in a PHP do...while loop execute at a minimum?

  • Once
  • Zero times
  • Twice
  • It depends on the condition
The block of code in a PHP do...while loop will execute at a minimum of once. This is because the code block is executed before the condition is checked. Even if the condition evaluates to false, the code block has already executed once. The do...while loop ensures that the code block is executed at least once, and then the condition is evaluated to determine if further iterations are needed. If the condition is true, the loop will execute the block of code again. If the condition is false, the loop terminates. Learn more: https://www.php.net/manual/en/control-structures.do.while.php
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The round() function in PHP rounds a floating point number to the nearest ______.

  • Whole number
  • Decimal place
  • Even number
  • Odd number
The round() function in PHP rounds a floating-point number to the nearest decimal place. The number is rounded to the specified precision or, by default, to the nearest whole number. The rounding behavior follows the standard rounding rules. This function is useful when you need to round a floating-point number to a specific decimal place or to the nearest whole number. Learn more: https://www.php.net/manual/en/function.round.php
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Which of the following are true about strings in PHP?

  • Strings can be concatenated using the dot (.) operator.
  • Strings in double quotes ("") allow for variable interpolation.
  • Strings can be accessed using array-like indexing.
  • All of the above
All of the given options are true about strings in PHP. Strings can be concatenated using the dot (.) operator to join multiple strings together. Strings enclosed in double quotes ("") allow for variable interpolation, where variables can be directly included within the string. Additionally, strings in PHP can be accessed using array-like indexing, allowing you to access individual characters by their position. Learn more: https://www.php.net/manual/en/language.types.string.php
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You need to process data sent in the URL's query string in your PHP script. How would you do this using the $_GET superglobal?

  • Access the data using the $_GET['key'] syntax and process it accordingly.
  • Access the data using the $_GET->$key syntax and process it accordingly.
  • Access the data using the $_GET['key'] method and process it accordingly.
  • Access the data using the $_GET->key method and process it accordingly.
To process data sent in the URL's query string in PHP using the $_GET superglobal, you can access the data using the $_GET['key'] syntax, where 'key' represents the name of the parameter in the query string. Once accessed, you can process the data according to your requirements in the PHP script. This can include tasks such as filtering, validating, or performing specific actions based on the data passed through the URL. Learn more: https://www.php.net/manual/en/reserved.variables.get.php
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In PHP, to handle a form, you can use the $_POST or $_GET superglobal to access the data, where the method used depends on the ______ attribute of the form element in the HTML.

  • Action
  • Method
  • Input
  • Name
In PHP, to handle a form, you can use the $_POST or $_GET superglobal to access the data submitted through the form. The method used depends on the method attribute of the form element in the HTML. The method attribute specifies how the form data is sent to the server, either using the HTTP POST method ($_POST) or the HTTP GET method ($_GET). In PHP, you can access the form data using the corresponding superglobal ($_POST or $_GET) based on the method specified in the form's method attribute. This allows you to retrieve the form input values and perform necessary actions based on the submitted data. Learn more: https://www.php.net/manual/en/tutorial.forms.php
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In PHP, a number with a decimal point or an exponential form is considered a float.

  • TRUE
  • FALSE
This statement is true. In PHP, a number with a decimal point (e.g., 3.14) or in exponential form (e.g., 1.2e3) is considered a float. Floats, also known as floating-point numbers or doubles, represent real numbers with decimal points. Integers, on the other hand, do not contain decimal points. Learn more: https://www.php.net/manual/en/language.types.float.php
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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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How are strings defined in PHP?

  • Enclosing characters within single quotes ('') or double quotes ("")
  • Using the string keyword
  • By assigning a value to the string() function
  • By using the new keyword with the String class
Strings in PHP can be defined by enclosing characters within single quotes ('') or double quotes (""). Both single quotes and double quotes can be used interchangeably, and they have slightly different behaviors. Single quotes preserve the literal value of each character, while double quotes allow for variable interpolation and the interpretation of escape sequences. Learn more: https://www.php.net/manual/en/language.types.string.php
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In PHP, the sqrt() function returns the square root of a(n) ______.

  • Integer
  • Array
  • String
  • Number
In PHP, the sqrt() function returns the square root of a number. The number can be of any numeric type, including integers and floating-point numbers. The sqrt() function is useful when you need to calculate the square root of a number in mathematical calculations. It returns a float representing the square root. Learn more: https://www.php.net/manual/en/function.sqrt.php
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