Functions & PHP

Question 1

PHP meaning

Answer 1

Hypertext Preprocessor

Question 2

PHP type of programming language

Answer 2

• open-source
• interpreted language
• general-purpose scripting language
• widely used in webdev

Question 3

what is a php file?

Answer 3

can contain text, html tags, and scripts
- returned to the browser as plain html

Question 4

php syntax

Answer 4

<?php
?>

Question 5

outputting in php

Answer 5

echo
print

Question 6

echo vs print

Answer 6

echo has no return value but can take multiple parameters
print has a return value of 1 making it usable for expressions

Question 7

where does the php interpreter execute code?

Answer 7

server

Question 8

declaring variables in php

Answer 8

• starts with $ symbol
• must START w/ letter or underscore(_)
• can only contain alpha-numeric characters and underscores

Question 9

concatenating operator in php

Answer 9

dot (.)
( . ) ( . )
“hello”. “ “ .”world”;

Question 10

function that returns length of string

Answer 10

strlen()

Question 11

function that finds the position of the first occurrence of a string inside another string

Answer 11

strpos()

Question 12

creating a newline in php

Answer 12

“<br></br>”
“\n”

Question 13

getting date in php

Answer 13

d - Represents the day of the month (01 to 31)
m - Represents a month (01 to 12)
Y - Represents a year (in four digits)
l (lowercase ‘L’) - Represents the day of the week

echo “Today is “ . date(“Y/m/d”)

Output:
Today is 2020/11/03

Question 14

parameters that are transferred to the function when it is requested.

Answer 14

actual parameter

Question 14

a parameter that you specify when you determine the subroutine or function.

Answer 14

formal parameter or dummy parameter

Question 15

using POST or GET

Answer 15

$_POST[“variable”];
$_GET[“variable”];

Question 16

purpose of action in a form

Answer 16

specifies where to send the form-data when a form is submitted.