3 ways to download remote images with PHP

This article demonstrates three methods of downloading images from remote URLs and saving them to local files, including file_get_contents, curl and fopen.
1. Use file_get_contents
function dlfile($file_url, $save_to)
{
$content = file_get_contents($file_url);
file_put_contents($save_to, $content);
}
2. Use CURL
function dlfile($file_url, $save_to)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_POST, 0);
curl_setopt($ch,CURLOPT_URL,$file_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$file_content = curl_exec($ch);
curl_close($ch);
$downloaded_file = fopen($save_to, 'w');
fwrite($downloaded_file, $file_content);
fclose($downloaded_file);
}
3. Use fopen
function dlfile($file_url, $save_to)
{
$in= fopen($file_url, "rb ");
$out= fopen($save_to, "wb");
while ($chunk = fread($in,8192))
{
fwrite($out, $chunk, 8192);
}
fclose($in);
fclose($out);
}
by iefreer

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