Q: php: Are multi-dimensional arrays supported by PHP?
Q: php: In PHP arrays may be either created by user or created by [...].
A: another function
Q: php: If you omit a key, the maximum of the integer-indices is taken, and the new key will be [...].
A: that maximum + 1
Q: php: What will be the result of using array or object as a key?
A: A warning: "Illegal offset type"
Q: php: What array will you get if you convert an object to an array?
A: An array with properties of that object as the array's elements.
Q: php: What two integer sorting order flags are used with array_multisort() function?
A: SORT_ASC and SORT_DESC
Q: php: What function computes the difference of arrays?
Q: php: What function checks if the given key or index exists in the array?
Q: php: What function returns an array with elements in reverse order?
Q: php: What functions count elements in an array?
A: count or sizeof