PHP

Question 1

Acronym for PHP

Answer 1

PHP Hypertext Preprocessor

Question 2

Original acronym for PhP

Answer 2

Personal Home Page

Question 3

Basic output statements in Php

Answer 3

Echo and print

Question 4

Variable names are case sensitive.

YES or NO ?

Answer 4

Yes

Question 5

$_GET

Answer 5

contains value of input being transported through GET method

Question 6

$_ENV

Answer 6

contains server environment variables

Question 7

String Concatenation

Answer 7

$string3 = $string1 . $string2;

Question 8

Function ‘filetype’

Answer 8

checks if it’s a file or directory
echo "/etc/passwd is a " . filetype('/etc/passwd');
// is a file
echo "/etc is a " . filetype('/etc');   // is a dir

Question 9

Function ‘gettype’

Answer 9

checks the type of variable
$var1 = 5;             // integer
echo gettype($var1);

Question 10

‘header’ function

Answer 10

used to redirect browser to another location

header(“Location: http://ict.senecacollege.com”);

Question 11

$_SERVER[“REMOTE_ADDR”]
$_SERVER[“SERVER_NAME”]
$_SERVER[“SERVER_ADDR”]

Answer 11

User’s IP address
Server’s name:
Server’s address

Question 12

strlen() function

Answer 12

to return the length of a string

Question 13

strpos() function

Answer 13

to search for a character/text within a string

• If a match is found, this function will return the character position of the first match.
• If no match is found, it will return FALSE.

echo strpos(“I love Linux”,” Linux”); //returns 7

Question 14

Date functions

Answer 14

// to show date in numbers eg. 21  11 10 
echo date("d m y");
// to show date in numbers with hyphen separators eg.21-11-10 
echo date("d-m-y");
// to show date in words  eg. Sun Nov 2010
echo date("D M Y");

Question 15

Time functions

Answer 15

//time (12 hr clock) separate by colon using a date function
echo date("h:i:s");
//time (24 hr clock) separated by colon using a date function
echo date("H:i:s");

Question 16

function ‘decbin’

Answer 16

converts decimal to binary

Question 17

function ‘bindec’

Answer 17

converts binary to decimal

Question 18

Associative Arrays

Answer 18

$ages=array(“Peter”=>32, “Jim”=>30, “Ken”=>34);

echo “Peter is “ . $ages[‘Peter’]. “years old”;

Question 19

Difference between: include() and require()

Answer 19

program will continue executing if the filename you pass to include() does not exist,
while require() will stop executing if the filename you pass does not exist