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PHP Regular Expressions

PHP Regular Expressions
Which one of the following functions is used to search a string?

preg_found
preg_search
preg_find
preg_match

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PHP Regular Expressions
Which among the following is/are not a metacharacter?
1. /a
2. /A
3. /b
4. /B

2, 3 and 4
1 and 3
2 and 4
Only 1

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PHP Regular Expressions
POSIX implementation was deprecated in which version of PHP?

PHP 5.2
PHP 5.3
PHP 4
PHP 5

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PHP Regular Expressions
What will be the output of the following PHP code?
$url = "contact@examians.com";
echo ltrim(strstr($url, "@"),"@");

contact@
contact@examians.com
contact
examians.com

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

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PHP Regular Expressions
[:alpha:] can also be specified as.

[A-z]
[A-Za-z0-9]
[A-za-z]
[a-z]

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