09-08-2013
Thanks everybody!
Scott, what I want is to let my function by itself get the size of the array, especially when the array size is unknown.
Your explanation about "2" is what I thought, but how come sometime it print 8 elements of the array?
I feel it is related to array and pointer/address, but I could not figure it out myself, especially when google gives many discussions, for example,
this one. but I am still unclear the problem with my code. Thanks a lot again!
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LEARN ABOUT PHP
array_pop
ARRAY_POP(3) 1 ARRAY_POP(3)
array_pop - Pop the element off the end of array
SYNOPSIS
mixed array_pop (array &$array)
DESCRIPTION
array_pop(3) pops and returns the last value of the $array, shortening the $array by one element.
Note
This function will reset(3) the array pointer of the input array after use.
PARAMETERS
o $array
- The array to get the value from.
RETURN VALUES
Returns the last value of $array. If $array is empty (or is not an array), NULL will be returned.
ERRORS
/EXCEPTIONS
This function will produce an error of level E_WARNING when called on a non-array.
EXAMPLES
Example #1
array_pop(3) example
<?php
$stack = array("orange", "banana", "apple", "raspberry");
$fruit = array_pop($stack);
print_r($stack);
?>
After this, $stack will have only 3 elements:
Array
(
[0] => orange
[1] => banana
[2] => apple
)
and raspberry will be assigned to $fruit.
SEE ALSO
array_push(3), array_shift(3), array_unshift(3).
PHP Documentation Group ARRAY_POP(3)