PHP String Test - Sanfoundry

1. Which of the following would be a potential match for the Perl-based regular expression /fo{2,4}/?

i) fol
ii) fool
iii) fooool
iv) fooooool

i) and iv)

ii) and iii)

Only i)

i), iii) and iv)

2. What will be the output of the following PHP code?

    <?php
    $text = "this is\tsome text that\nwe might like to parse.";
    print_r(split("[\n\t]",$text));
    ?>

Array ( [0] => some text that [1] => we might like to parse. )

[0] => this is [1] => some text that [2] => we might like to parse.

this is some text that we might like to parse.

Array ( [0] => this is [1] => some text that [2] => we might like to parse. )

3. Which among the following is/are not a metacharacter?

i) \a
ii) \A
iii) \b
iv) \B

ii) and iv)

i) and iii)

ii), iii) and iv)

Only i)

4. How many functions does PHP offer for searching strings using POSIX style regular expression?

5. POSIX implementation was deprecated in which version of PHP?

PHP 5.2

PHP 4

PHP 5.3

PHP 5

6. PHP has long supported two regular expression implementations known as _______ and _______

i) Perl
ii) PEAR
iii) Pearl
iv) POSIX

i) and ii)

ii) and iii)

i) and iv)

ii) and iv)

7. POSIX stands for ____________

Portable Operating System Interface for Unix

Portative Operating System Interface for Unix

Portative Operating System Interface for Linux

Portable Operating System Interface for Linux

8. [:alpha:] can also be specified as ________

[A-Za-z0-9]

[A-za-z]

[A-z]

[a-z]

9. What will be the output of the following PHP code?

    <?php
    $username = "jasoN";
    if (ereg("([^a-z])",$username))
        echo "Username must be all lowercase!";
    else
        echo "Username is all lowercase!";
    ?>

Username must be all lowercase!

Username is all lowercase!

Error

No Output is returned

10. Which one of the following regular expression matches any string containing zero or one p?