Treehouse PHP into

Question 1

php needs a .php extension to operate and wont work in a html ext

Answer 1

true

Question 2

a simple synatx error may cause the entire page not to load

Answer 2

t

Question 3

how to include in php

Answer 3

include(‘includes/header.php);

Question 4

php variables start with what

Answer 4

$

Question 5

to specify where a form posts its data you can add what to the form element

Answer 5

action=”action-process.php”

this woulld then load that .php file after submitting giving you access to the vars

Question 6

what does var_dump do in php

Answer 6

shows all accesible variables in an array

you can then access a variable from within it like such

var_dump($_POST);
$name = $_POST[“name”];

Question 7

in a form element, what keyword specifies if its a post form

Answer 7

method=”post”

Question 8

in php after submitting a form, a good practice is to redirect them to a different page than the submission complete .php fpage; how can we do this

Answer 8

at the end of the submission php page use the function header(“Location: page-thanks.php”);

Question 9

in php how can we check if the server is performing a get or a post or w/e

Answer 9

$_SERVER[“REQUEST_METHOD”]

Question 10

where are get variables set in a url

Answer 10

?var&var2 etc

Question 11

what is the PHP keyword to retrieve the get message

Answer 11

$_GET[“status”]

Question 12

in php how to check is a variable is set

Answer 12

isset (best used in an if statement to check if _getstatus is there, and then check if the value is equal to something using th and operator

Question 13

how to create an array in php

Answer 13

array=(1,2,3);

Question 14

in php echo a single array element

Answer 14

echo array[0];

Question 15

in php how to find the number of elements in an array

Answer 15

count(array)

Question 16

how to iterate each element in an array in php

Answer 16

foreach($array as $x){echo $x}

Question 17

in php using foreach to create a list you only need one ‘li’ and closing tag

Answer 17

t

Question 18

how to add an element to an existing array

Answer 18

$products[]=2;//you can specify the key inside the brackets if youd like, i.e. [103]=2;

Question 19

in php how to access an element by key

Answer 19

$array[1]

Question 20

in php how to create an associative array

Answer 20

$country= array(
“name”=>”USA”,
“population=>2000);

Question 21

how to access element in first dimension of nested array

Answer 21

$arr[0][0]

Question 22

how do you post html from inside php

Answer 22

you can echo html elements

Question 23

how to write a foreach loop using both key and falue

Answer 23

foreach($product as $key => $value)

Question 24

in php how to use a url ?var&var etc

Answer 24

$var=$_GET[“passedvarname”];