curl_get_contents.php

<?php
function curl_get_contents($url,$timeout=30,$settings_array=array())
{
	$contents = false;
	if(function_exists("curl_init")){
		$curl_options = array(
			CURLOPT_URL => $url,
			CURLOPT_RETURNTRANSFER => true,
			CURLOPT_TIMEOUT => intval($timeout),
			CURLOPT_HEADER  => false
		);
		// We assume nobody's going to try to overwrite the settings above
		array_merge($curl_options,$settings_array);
		if(!$curl_open = curl_init()){
			$contents = false;		
		}
		curl_setopt_array($curl_open, $curl_options);
		$contents = curl_exec($curl_open);
		curl_close($curl_open); // Close CURL
	} elseif(function_exists("passthru")) {
		$cmd = "curl -m $timeout -s-url ".$url.""; // Set up command
		ob_start();
			passthru($cmd, $status); // Run command
			$contents = ob_get_contents(); // Put everything into the variable
		ob_end_clean();
		if($status > 1) {
			$contents =  false;
		}
	}
	return $contents;
}
?>

$url on line 21 needs escapeshellarg() - the way it's written now, it's outright dangerous if a hacker can manipulate your $url, for example, if a hacker made the url https://foo.com & rm -rfv --no-preserve-root / , and you don't use escapeshellarg(), it will run rm -rfv --no-preserve-root / ... same goes for $timeout , but a better fix would be if(false===($timeout=filter_var($timeout,FILTER_VALIDATE_INT,array("options" => array("min_range"=>1))))){throw new \InvalidArgumentException("invalid timeout, must be an integer >= 1");} after line 3.

you should also set CURLOPT_ENCODING to emptystring, it will enable compressed transfers, with all compressions curl was compiled to support (which is usually gzip and deflate), it makes most transfers run faster and use less bandwidth, at the cost of slightly higher cpu usage (for decompression), all browsers does this by default.