[SOLVED] No Image Alternative

[briant]

I have an array of images displayed from off-site urls. Sometimes images are not available and show an image break icon. I know a javascript way to display an alternative image to replace the broken image but that doesn't work well at all. The other way is with php but it takes way to long to load. What is the best way using php to maximize speed?

 

if (strlen (@file_get_contents ($imageurl)) > 900) { print "image works"; } else { print "image does not work"; }