PHP Arrays
Which function returns an array consisting of associative key/value pairs?

array_count()
array_count_values()
count()
count_values()

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PHP Arrays
What will be the output of the following PHP code?
$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");
print_r(array_change_key_case($age, CASE_UPPER));

Array ( [peter] => 35 [ben] => 37 [joe] => 43 )
Array ( [PeTeR] => 35 [BeN] => 37 [Joe] => 43 )
Array ( [PETER] => 35 [BEN] => 37 [JOE] => 43 )
Array ( [Peter] => 35 [Ben] => 37 [Joe] => 43 )

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PHP Arrays
What will be the output of the following PHP code?
$a=array("A","Cat","Dog","A","Dog");
$b=array("A","A","Cat","A","Tiger");
$c=array_combine($a,$b);
print_r(array_count_values($c));

Array ( [A] => 6 [Cat] => 1 [Dog] => 2 [Tiger] => 1 )
Array ( [A] => 2 [Cat] => 2 [Dog] => 1 [Tiger] => 1 )
Array ( [A] => 5 [Cat] => 2 [Dog] => 2 [Tiger] => 1 )
Array ( [A] => 2 [Cat] => 1 [Dog] => 4 [Tiger] => 1 )

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PHP Arrays
What will be the output of the following PHP code ?
$array = array("red", "green");
array_push($array, "blue", "yellow");
print_r($array);

Array ( [0] => blue [1] => yellow [2] => red [3] => green )
Array ( [0] => blue [1] => yellow )
Array ( [0] => red [1] => green [2] => blue [3] => yellow )
Array ( [0] => red [1] => green )

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