Sharing of custom functions for downloading remote images implemented in PHP, _PHP tutorial

Sharing custom functions for downloading remote images implemented in PHP,

Copy code The code is as follows:

/**
* PHP download remote images to local
*
* @param $url string remote file address
* @param $filename string The saved file name (if empty, it is a randomly generated file name, otherwise it is the original file name)
* @param $fileType array allowed file types
* @param $dirName string The path where the file is saved (the rest of the path is automatically generated based on the time system)
* @param $type int How to obtain files remotely
* @return json returns the file name and file saving path
* @author blog.snsgou.com
​*/
function getImage($url, $fileName = '', $dirName, $fileType = array('jpg', 'gif'), $type = 1)
{
if ($url == '')
{
return false;
}

// Get the original file name of the file
$defaultFileName = basename($url);

// Get file type
$suffix = substr(strrchr($url, '.'), 1);
if (!in_array($suffix, $fileType))
{
return false;
}

//Set the saved file name
$fileName = $fileName == '' ? time() . rand(0, 9) . '.' . $suffix : $defaultFileName;

// Get remote file resources
if ($type)
{
$ch = curl_init();
$timeout = 15; // Timeout
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file = curl_exec($ch);
curl_close($ch);
}
else
{
ob_start();
readfile($url);
$file = ob_get_contents();
ob_end_clean();
}

//Set file saving path
$dirName = $dirName . '/' . date('Y', time()) . '/' . date('m', time()) . '/' . date('d', time()) . '/';
if (!file_exists($dirName))
{
mkdir($dirName, 0777, true);
}

// Save file
$res = fopen($dirName . $fileName, 'a');
fwrite($res, $file);
fclose($res);

return "{'fileName':$fileName, 'saveDir':$dirName}";
}

// Example
// Return: {'fileName':13668030896.jpg, 'saveDir':/www/test/img/2013/04/24/}
echo getImage('http://img.wan.renren.com/images/2013/0430/1367294093164.jpg', '', 'd:/PHP/data', array('jpg', 'gif'), 1);

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