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PHP Regular Expressions

PHP Regular Expressions
Which one of the following is not a preg PHP function?

preg_match_all
preg_matchall
preg_split
preg_match

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PHP Regular Expressions
Which one of the following preg PHP function is used to do a find and replace on a string or an array?

preg_find()
preg_findre()
preg_find_replace()
preg_replace()

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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, "@"),"@");

examians.com
contact@
contact
contact@examians.com

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PHP Regular Expressions
Which one of the following functions finds the last occurrence of a string, returning its numerical position?

strlastpos()
strrpos()
strpos()
strlast()

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

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

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

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