Software Engineer (PHP) at Focus School Software

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Software Engineer (PHP)

St. Petersburg, Florida, United States | Programming Team | Fully remote

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1. How would you access the number 10 in the $arr array? <?php $val = ‘1.2.3.4.5.6.7.8.9.10.11.12’; $arr[] = array(‘a’ => explode(‘.’,$val)); *

2. Write a foreach loop for array $numbers that will modify each entry by adding 10 to the value. $numbers = array(1,2,3,4,5,6); *

3. Write a function Counter() that keeps track of the number of times it is called. This function should not take any parameters and return the number of times that it has been called. <pre> Example: echo Counter();//1 echo Counter(); //2 </pre> *

4. What are the tags used to create bulleted and numbered lists? *

5. When is :: used instead of -> to access a method/variable in a class? *

6. Write a javascript and/or JQuery statement that would hide the words “<div class="makeInvisible">this text should be invisible.” Then, change the text “<div class="makeBold">this text should be bold</div>” to bold. *

7. Write a query that lists FIRST_NAME, LAST_NAME from the STUDENTS table and the average of the PERCENT column from the GRADES table. Both tables contain STUDENT_ID. Only match records where the GRADELEVEL column is 9, 10, 11, or 12. *

8. Write a PHP function that outputs the even numbers from the following array in ascending order with one number per line: <?php $numbers = [ 73, 22, 19, 62, 14, 3, 96, 88, 17, 41, 44, 1, 4, 31, 30, 24, 108, 37 ]; ?> *

9. Write a javascript function isEmpty() that will return true if an object is empty and false if it is not (excluding default prototype properties). Assume you do not have access to Lodash or other libraries. <br> Example: <script> let empty_object = {}; console.log(isEmpty(empty_object)); // true let not_empty_object = { foo : 'bar' }; console.log(isEmpty(not_empty_object)); // false </script> *

10. Table `invoices` has a primary key integer column `id` and a varchar column `title`. Table `invoice_allocations` has a column `invoice_id` that relates to the `invoices` table, has a numeric column `amount`, and has an integer column `paid`. Write a select query that outputs the invoice ID, invoice title, and sum of the invoice allocation amounts for each invoice where the allocation is paid *

11. Write the skeleton HTML for a table that has a header, body, and footer with three columns and one row. *

12. What is the value of $foo in the following code and why? <?php $foo = !!'foo'; ?> *

13. Below the Foo class, write code that will output the sum of $num_1, $num_2, and $num_3 from the Foo class. Feel free to instantiate an object of Foo if necessary. <?php class Foo { public static $num_1 = 7; public $num_2 = 4; private $num_3 = 9; public function getNum3() { return $this->num_3; } } ?> *

14. What is the difference between "var" and "let" in javascript? *

15. Write a jQuery event handler that will fire when a form with ID #foo is submitted and prevents the form from submitting. *

16. What is the difference between JOIN and INNER JOIN in SQL? *

17. Write a javascript function checkString(foo) which takes a parameter `foo`. The function should return a Promise that resolves if `foo` is equal to "hello", otherwise the Promise should reject. Below this function, write code that invokes checkString() and outputs (in the console) "Good!" upon Promise success or "Bad!" upon Promise failure. Do not use jQuery. *

18. Write a PHP function isValidPhone() that returns Boolean and uses regex to determine if a string is in the phone number format ###-###-#### (e.g. 727-999-0001). Example: <?php echo isValidPhone("727-999-0001"); // 1 echo isValidPhone("727-9990001"); // 0 ?> *

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