09-15-2007
Array Declaration and For Loop
I am just stucked in syntax.This is more like a array and for loop problem.
I want to use ls -l command and get filezise and filename of all filenames in the directory in an array (say array#1).
After 2 minutes of sleep, i want to get the same information in another array (say array#2).
The command ls -l | awk '{print $9 " " $5}' prints all the filenames and then space and then the filezise of that file. I want to compare each array value and then get those filenames which have same size in both arrays.
For example:
Declare Array1......
>ls -l | awk '{print $9 " " $5}'
File1 Size1 (copy this value in array1[0])
File2 Size2 (copy this value in array1[1])
File3 Size3 (copy this value in array1[2])
FileN SizeN (copy this value in array1[N])
After sleep 120, make another array called array2 and then
Declare array2.......
>ls -l | awk '{print $9 " " $5}'
File1 Size1 (copy this value in array2[0])
File2 Size2 (copy this value in array2[1])
File3 Size3 (copy this value in array2[2])
FileN SizeN (copy this value in array2[N])
May be we can get new files after 2 minutes but we have to get all the rows in it.
Then using a for loop, compare each value of array1 with array2 and where array1 value=array2 value, I have to get the value of array1 first argument (i.e. File name itself not the whole string which will include the filesize which is seperated by space).
Please convert this to correct synatx in shell.Thanks.
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LEARN ABOUT PHP
array_chunk
ARRAY_CHUNK(3) 1 ARRAY_CHUNK(3)
array_chunk - Split an array into chunks
SYNOPSIS
array array_chunk (array $array, int $size, [bool $preserve_keys = false])
DESCRIPTION
Chunks an array into arrays with $size elements. The last chunk may contain less than $size elements.
PARAMETERS
o $array
- The array to work on
o $size
- The size of each chunk
o $preserve_keys
- When set to TRUE keys will be preserved. Default is FALSE which will reindex the chunk numerically
RETURN VALUES
Returns a multidimensional numerically indexed array, starting with zero, with each dimension containing $size elements.
ERRORS
/EXCEPTIONS
If $size is less than 1 E_WARNING will be thrown and NULL returned.
EXAMPLES
Example #1
array_chunk(3) example
<?php
$input_array = array('a', 'b', 'c', 'd', 'e');
print_r(array_chunk($input_array, 2));
print_r(array_chunk($input_array, 2, true));
?>
The above example will output:
Array
(
[0] => Array
(
[0] => a
[1] => b
)
[1] => Array
(
[0] => c
[1] => d
)
[2] => Array
(
[0] => e
)
)
Array
(
[0] => Array
(
[0] => a
[1] => b
)
[1] => Array
(
[2] => c
[3] => d
)
[2] => Array
(
[4] => e
)
)
SEE ALSO
array_slice(3).
PHP Documentation Group ARRAY_CHUNK(3)