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Full Discussion: Check for file permission
Top Forums Shell Programming and Scripting Check for file permission Post 302890233 by alister on Tuesday 25th of February 2014 11:14:20 PM
Old 02-26-2014
Quote:
Originally Posted by SriniShoo
If the array has 10 elements, i.e., $arr[0] to $arr[9], below is the code

Code:
for i in $(seq 0 9);

Just use "${arr[@]}". You don't need to know how many elements exist nor do you need an external command like seq.


Quote:
Originally Posted by bakunin
You shouldn't do that. for-loops can break if you have too many elements. Use a while-loop instead:
I disagree. Any runtime that can't iterate over its own arrays is badly broken.

Regards,
Alister
 

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CURRENT(3)								 1								CURRENT(3)

current - Return the current element in an array

SYNOPSIS
mixed current (array &$array) DESCRIPTION
Every array has an internal pointer to its "current" element, which is initialized to the first element inserted into the array. PARAMETERS
o $array - The array. RETURN VALUES
The current(3) function simply returns the value of the array element that's currently being pointed to by the internal pointer. It does not move the pointer in any way. If the internal pointer points beyond the end of the elements list or the array is empty, current(3) returns FALSE. Warning This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on Booleans for more information. Use the === operator for testing the return value of this function. EXAMPLES
Example #1 Example use of current(3) and friends <?php $transport = array('foot', 'bike', 'car', 'plane'); $mode = current($transport); // $mode = 'foot'; $mode = next($transport); // $mode = 'bike'; $mode = current($transport); // $mode = 'bike'; $mode = prev($transport); // $mode = 'foot'; $mode = end($transport); // $mode = 'plane'; $mode = current($transport); // $mode = 'plane'; $arr = array(); var_dump(current($arr)); // bool(false) $arr = array(array()); var_dump(current($arr)); // array(0) { } ?> NOTES
Note You won't be able to distinguish the end of an array from a boolean FALSE element. To properly traverse an array which may contain FALSE elements, see the each(3) function. SEE ALSO
end(3), key(3), each(3), prev(3), reset(3), next(3). PHP Documentation Group CURRENT(3)
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