PREPARATÓRIO CERTIFICAÇÃO PHP5
40 Horas
Instrutor: Antonio Itamar Júnior
STRINGS AND REGULAR EXPRESSIONS
- Declaração de classe
- Nomenclatura
- Instanciar classe
- Utilizar atributos e métodos de classe
STRINGS AND REGULAR EXPRESSIONS
STRINGS ARE THE SWISS-ARMY knife of PHP, particularly if you consider the fact that
most PHP scripts are used to serve web pages—which are, for the most part, nothing more
than
large strings. Knowing how to use this particular facility is, therefore, one of the most
fundamental skills of the PHP developer, since you’ll be working with them day in and day
out.
Luckily, its essential role in the life of a PHP script has resulted in string manipulation
being made exceptionally easy by the PHP development team. Therefore, once you get past
the
first few hurdles, handling strings becomes easy, quick and—to some extent—even fun.
However, this particular aspect of PHP programming is far from being free of pitfalls. This
portion of the exam tests your understanding of strings as well as your knowledge of the
body of
functions that are used to manipulate them. Additionally, you’ll find yourself faced with the
basics of that most voodoo art of writing regular expressions, which, despite being a hugely
useful tool, is too often neglected by most developers.
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QUESTÃO 1
Consider the following script. What line of code should be inserted in the
marked location in order to display the string php when this script is
executed?
“Considere o seguinte script. Qual linha de código deve ser inserida no local
marcado para exibir a string php quando esse script for executado?”
<?php
$alpha = 'abcdefghijklmnopqrstuvwxyz';
$letters = array( 15 , 7 , 15 );
foreach( $letters as $val )
{
/* What should be here */
}
?>
A. echo chr($val);
B. echo asc($val);
C. echo substr($alpha, $val, 2);
D. echo $alpha{$val};
E. echo $alpha{$val+1}
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QUESTÃO 2
Which of the following will not combine strings $s1 and $s2 into a single
string?
“Qual das seguintes variáveis não irá combinar strings $s1 e $s2 em uma
única string?”
A. $s1 + $s2
B. "{$s1}{$s2}"
C. $s1.$s2
D. implode('', array($s1,$s2))
E. All of the above combine the strings

Explicação
Com exceção da resposta A, todas as repostas produzirão o resultado desejado de
concatenação das strings $s1 com $s2. No PHP, o operador mais (+) não combina duas
strings juntas, como acontece em outras línguas, tais como Java e Javascript.
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QUESTÃO 3
Given a variable $email containing the string [email protected],
which of the following statements would extract the string
example.com?
“Dada uma variável $ email contendo a string [email protected], qual das
seguintes declarações seria extrair a seqüência example.com?”
A. substr($email, strpos($email, "@"));
B. strstr($email, "@");
C. strchr($email, "@");
D. substr($email, strpos($email, "@")+1);
E. strrpos($email, "@");

Explicação
A funçao substr é usada para retornar uma parte de um texto, enquanto a função strpos é
usada para encontrar uma determinada substring dentro de uma string. Utilizado em
conjunto, podemos extrair a informação exigida.
É importante perceber que é ex-zero-indexados, enquanto o último não é,
1 exigindo uma compensação a ser adicionado. É por isso que a resposta D é correto.
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MANIPULATING FILES
- Manipulação de Arquivos
- 20 questões
MANIPULATING FILES
THOUGH YOU MAY NEVER think of file manipulation as one PHP’s strengths, it is actually
a
very useful tool for the developer. Even if you only develop websites, being able to read from
and write to a file can turn out to be a very handy capability. After all, remember that, thanks
to
its stream wrappers (covered in more detail in Chapter 10), PHP makes it possible to open a
remote file and read from it—useful, for example, for including content from a third-party site.
On a more basic level, however, file input/output can be used for a multitude of tasks. For
example, it’s handy for reading and interpreting the contents of a preformatted file, such as
you
could receive from a third-party provider sending you syndicated content, or for opening up
and
outputting binary files to the browser through your scripts so that you can more tightly control
access to them. Whatever the end use, you will be tested not only on the basics of opening,
closing and accessing a file’s contents, but also on fundamental aspects of file manipulation
that
are relevant in a multi-process environment, such as file locking.
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QUESTÃO 1
The _______ function is used to read a single line from a file and is
used when dealing with text files. For reading binary data or other
specific segments of a file, you should use the _______ function
instead.
“_______ A função é usada para ler uma única linha de um arquivo e é usado
quando se lida com arquivos de texto. Para leitura de dados binários ou outros
segmentos específicos de um arquivo, você deve usar o _______ Função vez.”
A. fgets(), fseek()
B. fread(), fgets()
C. fputs(), fgets()
D. fgets(), fread()
E. fread(), fseek()
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QUESTÃO 2
Although file resources will automatically be closed at the end of a
request in PHP, you can close them explicitly by calling the _______
function.
Your Answer: ____________________________
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QUESTÇÃO 3
Consider the following PHP script, which reads a file, line-by-line, from
a text file. Which function call should be inserted in place of the
question marks in order for the script to function correctly?
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QUESTÃO 4

Which of the following techniques will guarantee a lock safe from any
race condition?
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REFERÊNCIA BIBLIOGRÁFICAS

PHP
http://www.php.net
 Zend.PHP.5.Certification.Study.Guide.2006
 The_Zend_PHP_Certification_Practice_Test_Book


MySQL
http://www.mysql.com [acessado em 1 de maio de 2009 as 21Hrs]
 http://dev.mysql.com [acessado em 1 de maio de 2009 as 20Hrs]
 http://www.w3schools.com/sql [acessado em 1 de maio de 2009 as 21Hrs]

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