Php

Front 1

How can precisely one byte be read from a file, pointed by $fp?

Back 1

fgetc($fp)

Front 2

What object method specifies post-deserialization behavior for an object?

Back 2

__wakeup()

Front 3

Where does the session extension store the session data by default?

Back 3

File System

Front 4

Which of the following data types cannot be directly manipulated by the client?

Back 4

Session Data

Front 5

What is the difference between isset() and other is_*() functions (is_alpha(), is_number(), etc.)?

Back 5

isset() is a language construct and is_*() are not language constructs

Front 6

What will be the value of $b after running the following code?

<?php
$a = array(‘c’, ‘b’, ‘a’);
$b = (array) $a;

Back 6

array(‘c’, ‘b’, ‘a’)

Front 7

Which of the following function signatures is correct if you want to have classes automatically loaded?

Back 7

function __autoload($class_name)

Front 8

How do you get information from a form that is submitted using the "get" method?

Back 8

$_GET[];

Front 9

What is the correct way to include the file "time.inc" ?

Back 9

<?php include("time.inc"); ?>

Front 10

What is the correct way to create a function in PHP?

Back 10

function myFunction()

Front 11

What is the correct way to open the file "time.txt" as readable?

Back 11

fopen("time.txt","r");

Front 12

What is the correct way to add 1 to the $count variable?

Back 12

$count++;

Front 13

How does PHP differ from languages like perl and C?

Back 13

PHP differs from Perl or C scripting languages by using special start and end tags that enclose the code, allowing the programmer to freely move in and out of “PHP mode”

Front 14

arrays may be sorted with which functions

Back 14

uksort()
arsort()
ksort()

Front 15

In PHP, the error control operator is ________.

Back 15

@

Front 16

What does break; do?

Back 16

Ends execution of the current for, foreach, while, do-while or switch structure

Front 17

What library do you need in order to process images?

Back 17

GD library

Front 18

A constructor is a special kind of…

Back 18

Method

Front 19

The three possible connection states in PHP are ________.

Back 19

normal
aborted
timeout

Front 20

Which functions are used by PHP to find out what type a variable is?

Back 20

gettype()
is_double()

Front 21

Choose the selection that best matches the following statements: PHP is a _____ scripting language based on the ____ engine. It is primarily used to develop dynamic _____ content, although it can be used to generate ____ documents (among others) as well.

Back 21

Embedded, Zend, HTML, XML

Front 22

Variables, however cannot start with _____

Back 22

numbers

Front 23

define(myvalue, "10"); is an example of defining a _________

Back 23

constant

Front 24

What is the difference between print() and echo()?

Back 24

print() can be used as part of an expression, while echo() can’t

print() behaves like a function with its own return value

echo() is actually a language construct

Front 25

% operator is a modulus. What does it return

Back 25

whatever the remainder would be if its two operands were divided

Front 26

The << operator is a left-shift operator. What does it do?

solve for i
i=16<<4

Back 26

multiplies an integer number by powers of two

i = (16*2)*(4*2)=256

Front 27

What is the best way to iterate through an array, assuming you want to modify the value of each element as you do?

Back 27

a for loop

foreach statement is notthe most appropriate construct b/c it works on a copy

Front 28

Under what circumstance is it impossible to assign a default value to a parameter while declaring a function?

Back 28

When the parameter is being declared as passed by reference

Front 29

The ____ operator returns True if either of its operands can be evaluated as True, but not both. (enter as text, not symbol)

Back 29

the exclusive-or (xor) operator.

Front 30

How does the identity operator === compare two values?

Back 30

The identity operator works by first comparing the type of both its operands, and then their values. If either differ, it returns False

Front 31

$a <<= 2;

Back 31

the left bitwise shift operator is used to shift the value of $a by two bits to the left, which corresponds to a multiplication by 4.