get_remote_file

<?php
public function get_remote_file($url) {
		if(function_exists('file_get_contents')) {
			$file_content = @file_get_contents($url);
		} elseif(ini_get('allow_url_fopen') && ($file = @fopen($url, 'rb'))) {
			$i = 0;
      $file_content = "";
			while(!feof($file) && $i++ < 1000) {
				$file_content .= strtolower(fread($file, 4096));
			}
			fclose($file);
		} elseif(function_exists('curl_init')) {
			$curl_handle = curl_init();
			curl_setopt($curl_handle, CURLOPT_URL, $url);
			curl_setopt($curl_handle, CURLOPT_CONNECTTIMEOUT, 2);
			curl_setopt($curl_handle, CURLOPT_RETURNTRANSFER, 1);
			curl_setopt($curl_handle, CURLOPT_FAILONERROR, 1);
			curl_setopt($curl_handle, CURLOPT_USERAGENT, 'Trackback Spam Check'); //引用垃圾邮件检查 
			$file_content = curl_exec($curl_handle);
			curl_close($curl_handle);
		} else {
			$file_content = '';
		}
	
		return $file_content;
	}
>