php：达到重定向限制

Question

I'm running the following loop:

for ($i=0; $i < 30; $i++) {
    sleep(2);
    $content = file_get_contents('http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444528825');
}

Basically, I'm running a cronjob (every one minute, 30 times) that gets data from a json file. The file that I'm receiving is being updated automatically. When there is no data it's empty, if there is data it has data in it..

So basically when the file is empty I get this error:

PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534443): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found

That's ok and understandable, but the problem is that sometimes, I get this error instead:

PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534451): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60

I searched it up but I didn't find any reason for the second error to appear. What can I do? Is there a smarter way to write this script or avoid getting the error?

Example of error log:

PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534443): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
 in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534445): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
 in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534447): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
 in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534449): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
 in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534451): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534454): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534456): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534458): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534460): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534462): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534464): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534466): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534468): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534470): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534500): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60
PHP Warning:  file_get_contents(http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1444534502): failed to open stream: Redirection limit reached, aborting in /home/dupdates/domains/dupdates.com/public_html/systems/history/script.php on line 60

Answer 1

I used curl instead:

<?php
        $ch = curl_init();

        curl_setopt($ch, CURLOPT_URL, 'http://www.oref.org.il/WarningMessages/Alert/alerts.json?v=1'); 

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_FRESH_CONNECT, TRUE);
        curl_setopt($ch, CURLOPT_TIMEOUT, '3');
        $content = curl_exec($ch);
        curl_close($ch);