如何在PHP中将4字节数组转换为整数？

Question

How to Converts a 4-Byte Array to Integer array.

<?php
$i = "A\0\0\0\A\0\0\0\A\0\0\0";  //I think this input 12Byte Array
$j = unpack("i*",$i); //I want this output 65,65,65 (4Byte * 3)
?>

is not working code..

how can i get the output

   $j[0]=65, $j[1]=65, $j[2]=65 ?

Answer 1

The above code is not working due to the fact that you're trying to reference a variable that wasn't defined:

$i = "A\0\0\0\A\0\0\0\A\0\0\0"; 
$j = unpack("i*",$i); //$i here, not $j

The output that comes from this is:

Array
(
    [1] => 65
    [2] => 16732
    [3] => 4283392
)

Example/Demo