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PHP REGULAR EXPRESSIONS

PHP Regular Expressions
How many functions does PHP offer for searching and modifying strings using Perl-compatible regular expressions.

7
10
8
9

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PHP Regular Expressions
What will be the output of the following PHP code?
$foods = array("pasta", "steak", "fish", "potatoes");
$food = preg_grep("/^s/", $foods);
print_r($food);

Array ( [3] => potatoes )
Array ( [0] => pasta [1] => steak [2] => fish [3] => potatoes )
Array ( [0] => potatoes )
Array ( [1] => steak )

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PHP Regular Expressions
Say we have two compare two strings which of the following function/functions can you use?
1. strcmp()
2. strcasecmp()
3. strspn()
4. strcspn()

3 and 4
1 and 2
All of the mentioned
None of the mentioned

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PHP Regular Expressions
Which one of the following functions will convert a string to all uppercase?

strtoupper()
struppercase()
uppercase()
str_uppercase()

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PHP Regular Expressions
What will be the output of the following PHP code?
echo str_pad("Salad", 5)." is good.";

SaladSaladSaladSaladSalad is good
is good SaladSaladSaladSaladSalad
is good Salad
Salad is good

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