functions.php for live blogging with twilio and simperium demo @ http://rogerstringer.com/2014/01/05/live-blogging-twilio-simperium

functions.php

<?php
	function slugify( $string ){
		$string = strtolower( trim($string) );
		$slug=preg_replace('/[^A-Za-z0-9-]+/', '-', $string);
		return $slug;
	}
	
	function cropResize($img,$out='',$dSize=170){
		$x = @getimagesize($img);
		$sw = $x[0];
		$sh = $x[1];
		$yOff = 0;
		$xOff = 0;
		if($sw < $sh) {
			$scale = $dSize / $sw;
			$yOff = $sh/2 - $dSize/$scale/2; 
		} else {
			$scale = $dSize / $sh;
			$xOff = $sw/2 - $dSize/$scale/2; 
		}
		
		$im = @ImageCreateFromJPEG ($img) or // Read JPEG Image
		$im = @ImageCreateFromPNG ($img) or // or PNG Image
		$im = @ImageCreateFromGIF ($img) or // or GIF Image
		$im = false; // If image is not JPEG, PNG, or GIF
		
		if (!$im) {
			readfile ($img);
		} else {
			$thumb = @ImageCreateTrueColor ($dSize,$dSize);
			imagecopyresampled($thumb, $im, 
			0, 0, 
			$xOff,$yOff,
			$dSize, $dSize, 
			$dSize / $scale ,$dSize / $scale);
		}
		if( $out == '' ){
			header('content-type:image/jpeg');
			imagejpeg($thumb);
		}else{
			imagejpeg($thumb, $out);
		}
	}