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Home - LinkedIn PHP Skill Quiz Assessment Answers

LinkedIn PHP Skill Quiz Assessment Answers

Which code snippet uses the correct syntax for creating an instance of the Pet class?

What is the purpose of adding a lowercase “u” as a modifier after the final delimiter in a Perl-compatible regular expression?

Which value equates to true?

What is missing from this code, which is supposed to create a test cookies?

Which are valid PHP error handling keywords?

What is the value of $total in this calculation?

The **_ operator is useful for sorting operations. It compares two values and returns an integer less than, equal to, or greater than 0 depending on whether on whether the value on the _**is less than, equal to, or greater than the other.

All variables in PHP start with which symbol?

What is a key difference between GET and POST?

In the following script, which line(s) will cause an error(s)?

In a conditional statement, you want to execute the code only if both value are true. Which comparison operator should you use?

Which is the most secure way to avoid storing a password in clear text in database?

What is the best way to explain what this script does?

What does this code output?

What does this script do?

Which is the way to create an array of “seasons”?

Your php page is unexpectedly rendering as totally blank. Which step will shed light on the problem?

Assuming the Horse class exists, which is a valid example of inheritance in PHP?

What is the significance of the three dots in this function signature?

Which operator would you use to find the remainder after division?

What displays in a browser when the following code is written?

Which line could you NOT use to comment out “Space: the final frontier”?

Both self and this are keywords that can be used to refer to member variables of an enclosing class. The difference is that $this->member should be used for __ members and self::$member should be used for __ members.

The ignore_user_abort( ) function sets whether a client disconnect should abort a script execution. In what scenario would you, as a web developer, use this function?

How might you troubleshoot a “call to undefined function” error?

PHP supports multiple types of loops. If you wanted to loop through a block of code if and as long a specified condition is true, which type of loop would you use?

Which is the correct format for adding a comment to a PHP script?

Both triple === and double == can be used to **_ variables in php. If you want to hear that string “33” and the number 33 are equal, you would use ** . If you want to check if an array contains a particular string value at a particular index, you would use ___

The PHP function array_reduce() takes a callback function that accepts a value carried over each iteration and the current item in the array, and reduces an array to a single value. Which code sample will sum and output the values in the provided array?

Which PHP script uses a constructor to display the string “Winter is almost over!”?

Assuming that $first_name and $family_name are valid strings, which statement is invalid?

What is the job of the controller as a component in MVC?

Why does this code trigger an error?: $string = ‘Shylock in a Shakespeare’s “Merchant of Venice” demands his pound of flesh.’;

What is the value of ‘$result’ in this calculation?

For the HTML form below, what is the correct functioning script that checks the input “mail” to be sure it is filled before proceeding?

You want to list the modules available in your PHP installation. What command should you run?

The php not operator is !. Given the snippet, is there an out put and what is it?

Which php control structure is used inside a loop to skip the rest of the current loops code and go back to the start of the loop for the next iteration

What is the cause of ‘Cannot modify header information – headers already sent’?

A PDO object called $db has been set up to use for database operations, including user authentication. All user-related properties are set. The script line public function __construct(&$db) shows a constructor that initializes all user-related properties to ____ if no user has logged in. These parameters will be properly set by the login functions when a user logs in.

Which code would you use to print all the elements in an array called $cupcakes?

You are using the following code to find a users band, but it is returning false. Which step(s) would solve the problem?

Which code snippet demonstrates encapsulation?

What will this code print?

The following XML document is in books.xml. Which code will output “Historical”?

Which PHP script finds the earliest and latest dates from an array?

In PHP 7, What is the correct way to import multiple classes from namespace in a single declaration ?!

When it comes to the value of a variable, what is the difference between NULL and empty?

Which is the most complete list of data types that PHP supports?

What would be a good name for this function?

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