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10,573 Pointsis_array($arr) question
is_array($arr) is placing before foreach loop, means that we will validate if $arr is an array before we run foreach loop. So in this case, why should we set the array to $arr = array (name1, name2) instead? In the example, we assign array to '$name' and $name come after the is_array($arr) validation, so I suppose the is_array($arr) should equal to false?
1 Answer
nathanl
9,458 PointsFunctions are not executed automatically when the page loads; they are only executed when called.
In the example, you have a function named hello which validates whether or not the argument is an array. The actions in this function are only performed when hello($names)
is executed at the end.
For clarity the order of execution is as follows:
- The
$names
variable is set to the array - The
hello()
function is called with the$names
variable passed in as the argument - The
hello()
function is run and performs the defined actions