Zend Preparation | PHP Quiz (Learning Mode)

Arrays Learning Mode

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What will be the output of the following PHP code?

array_combine(array(1,2,3,6),array(4,5,6));

Warning message

array(1=>2,3=>4,5=>6)

array(1=>4,2=>5,3=>6)

array(1,2,3,4,5,6)

Explanation: Answer option A is correct.

The array_combine() function is used to combine two arrays. It uses the first array as a key and the second array as a value. For example,

You want to run the following PHP code:

    array_combine(array(1,2,3,6),array(4,5,6));

Here, the array_combine() function creates an array by using one array for keys and another for its values and gives the following array as the output:

    array(1=>4,2=>5,3=>6)

Note: Both parameters of the array_combine() function should have an equal number of elements, otherwise it will produce a warning message.

Reference: http://in2.php.net/manual/en/function.array-combine.php