PHP在数组中搜索值 - 如果全部是数字则返回true，否则返回false

Question

Ok, Stupid question here... just trying to do a search in an array to be sure all of the values are numeric, if not, I need to return false. What's the quickest way to do this. This array could be HUGE. By the way, it's not a multi-dimensional array, and doesn't have any sub-arrays within it. It's just a one level array... example:

array(1, 5, 6, 2, 44, 92, 50, string);

This should return false, cause string is one of the values in the array and is not a number. I mean, is there a faster way to do this than using foreach on the array and using intval on every value??

Thanks guys :)

Answer 1

You can use is_numeric function -

$count = count($your_array);

for($index=0; $index<$count; $index++)
{
    if( !is_numeric($your_array[index]) )
        return false;
}