CODEWITHSUNDEEP
php
user198989
user198989

Reputation: 4665

How to avoid file_get_contents error: "Couldn't resolve host name"

I succesfully fetch websites with 

file_get_contents("http://www.site.com");

However, if the url doesn't exist, or not reachable, I am getting

Warning: file_get_contents(http://www.site.com) [function.file-get-contents]: 
failed to open stream: operation failed in /home/track/public_html/site.php 
on line 773

Is it possible to echo "Site not reachable"; instead of the error ?

Upvotes: 6

Views: 5840

Answers (5)

julien salmon
julien salmon

Reputation: 11

You can use curl for avoid displaying php errors :

    $externalUrl = ** your http request **

    curl_setopt($curl, CURLOPT_URL, $externalUrl); // Set the URL
    curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.131 Safari/537.36'); // Use your user agent
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); // Set so curl_exec returns the result instead of outputting it.
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); // Bypass SSL Verifyers
    curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 5);
    curl_setopt($curl, CURLOPT_TIMEOUT, 10);
    curl_setopt($curl, CURLOPT_HTTPHEADER, array(
        'Content-Type: application/x-www-form-urlencoded'
    ));

    $result = curl_exec($curl); // send request
    $result = json_decode($result);

Upvotes: 1

sroes
sroes

Reputation: 15053

I would perfer to trigger exceptions instead of error messages:

function exception_error_handler($errno, $errstr, $errfile, $errline ) {
    // see http://php.net/manual/en/class.errorexception.php
    throw new ErrorException($errstr, $errno, 0, $errfile, $errline);
}

set_error_handler("exception_error_handler");

Now you can catch the error like this:

try {
    $content = file_get_contents($url);
} catch (ErrorException $ex) {
    echo 'Site not reachable (' . $ex->getMessage() . ')';
}

Upvotes: 6

hek2mgl
hek2mgl

Reputation: 158060

You can use the silence operator @ together with $php_errormsg:

if(@file_get_contents($url) === FALSE) {
    die($php_errormsg);
}

Where the @ suppresses the error message, the message text will be available for output in $php_errormsg

But note that $php_errormsg is disabled by default. You'll have to turn on track_errors. So add at the top of your code:

ini_set('track_errors', 1);

However there is a way that does not depend on track errors:

if(@file_get_contents($url) === FALSE) {
    $error = error_get_last();
    if(!$error) {
        die('An unknown error has occured');
    } else {
        die($error['message']);
    }
}

Upvotes: 8

CETb
CETb

Reputation: 371

You can turn off warnings in PHP :

Turn off warnings and errors on PHP and MySQL

See in documentation:

https://www.php.net/manual/en/function.file-get-contents.php

Return Values: The function returns the read data or FALSE on failure.

or write @, before function, for avoid to see error:

@file_get_contents(...

Upvotes: 0

crackmigg
crackmigg

Reputation: 5901

This should work:

@file_get_contents("http://www.site.com");

The @ suppresses warnings and errors to be output by PHP. You will have to deal with an empty response yourself then.

Upvotes: 2

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