CODEWITHSUNDEEP
php
Bharanikumar
Bharanikumar

Reputation: 25733

Reg: multiple callback not working in array map

so many ways, we can achieve below expected output, but here intention is, how to use multiple callback in array map and achieve the below expected output.

How to add multiple callback in array_map

<?php
$scandir = scandir('.');
echo "<pre>";
print_r($scandir);
$scandir = array_map('array_filter',array_map('callback',$scandir));
print_r($scandir);

function callback(&$var){
    $curtime  = time();
    $filetime = filemtime($var);
    $diff = $curtime - $filetime;
    if ($diff < 2000){
        return $var;
    }
}
?>

Actual Output

Array
(
    [0] => .
    [1] => ..
    [2] => array.php
    [3] => array.php.bak
    [4] => code-test.php
    [5] => code-test.txt
    [6] => code-test.txt.bak
    [7] => code-test2.php
    [8] => load-file.csv
    [9] => load-file2.csv
)
Array
(
    [0] => 
    [1] => 
    [2] => 
    [3] => 
    [4] => 
    [5] => 
    [6] => 
    [7] => 
    [8] => 
    [9] => 
)

Expected Output

Array
(
    [2] => array.php
    [3] => array.php.bak
)

Upvotes: 1

Views: 73

Answers (2)

l&#39;L&#39;l
l&#39;L&#39;l

Reputation: 47169

It's a bit unclear what you are actually wanting to do, although if the intention is to check for files or directories that have been modified within a certain range from now then making a few adjustments to your code should be adequate:

function callback(&$var) {
    $curtime  = time();
    $filetime = filemtime($var);
    $diff = $curtime - $filetime;
    if ($diff < 2000) {
        return $var;
    }
};

$scandir = scandir('.');
$scandir = array_filter(array_map("callback", $scandir));
print_r($scandir);

Some of the code you have might not be necessary, although I unfortunately can't check it atm.

Upvotes: 1

DrKey
DrKey

Reputation: 3495

I think the problem is when you call

$scandir = array_map('array_filter',array_map('callback',$scandir));

because you can achieve that by using array_filter function.

The following should works

<?php
$scandir = scandir('.');
echo "<pre>";
print_r($scandir);
$scandir = array_filter($scandir,'callback');
print_r($scandir);

function callback(&$var){
    $curtime  = time();
    $filetime = filemtime($var);
    $diff = $curtime - $filetime;
    if ($diff < 2000 && $var != '.'){
        return $var;
    }
}
?>

Upvotes: 1

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