CODEWITHSUNDEEP
phpcmd
Panda
Panda

Reputation: 2510

how to know whether a file has changed or not in php

i have created this small script which can be used to detect whether the file has changed or not. bt unfortunately its not working. Someone Pls help me out.

<?php
$l_m1 = filemtime("C:\wamp\www\learning\h.aspx");
print("filemtime1");
print($l_m1);
sleep(10);
$l_m2 = filemtime("C:\wamp\www\learning\h.aspx");
print("filemtime2");
print($l_m2);
if((int)$l_m1 != (int)$l_m2)
{
    alert("the files are different");
    system("start d:/kalimba.mp3");
}

Upvotes: 1

Views: 59

Answers (1)

Bo Chen
Bo Chen

Reputation: 436

the filemtime function results of this function are cached

so you must use clearstatcache() to clears file status cache;

try below:

$l_m1 = filemtime("h.php");
print("filemtime1");
print($l_m1);
sleep(10);
clearstatcache();
$l_m2 = filemtime("h.php");
print("filemtime2");
print($l_m2);
if((int)$l_m1 != (int)$l_m2)
{
    alert("the files are different");
    system("start d:/kalimba.mp3");
}

Upvotes: 2

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