Online PHP editor | rfc for CJ4c8

<?php define("TOP",0); define("BOTTOM",1); define("LEFT",2); define("RIGHT",3); function perspective($i,$gradient=0.85,$rightdown=TOP,$background=0xFFFFFF, $alpha=0) { $w=imagesx($i); $h=imagesy($i); $col=imagecolorallocatealpha($i,($background>>16)&0xFF,($background>>8)&0xFF,$background&0xFF,$alpha); $mult=5; $li=imagecreatetruecolor($w*$mult,$h*$mult); imagealphablending($li,false); imagefilledrectangle($li,0,0,$w*$mult,$h*$mult,$col); imagesavealpha($li,true); imagecopyresized($li,$i,0,0,0,0,$w*$mult,$h*$mult,$w,$h); imagedestroy($i); $w*=$mult; $h*=$mult; $image=imagecreatetruecolor($w,$h); imagealphablending($image,false); imagefilledrectangle($image,0,0,$w,$h,$col); imagealphablending($image,true); imageantialias($image,true); $test=$h*$gradient; $rdmod=$rightdown%2; $min=1; if($rightdown<2){ for($y=0;$y<$h;$y++){ $ny=$rdmod? $y : $h-$y; $off=round((1-$gradient)*$w*($ny/$h)); $t=((1-pow(1-pow(($ny/$h),2),0.5))*(1-$gradient)+($ny/$h)*$gradient); $nt=$rdmod? $t : 1-$t; if(abs(0.5-$nt)<$min){ $min=abs(0.5-$nt); $naty=$off; } imagecopyresampled($image,$li, round($off/2),$y, 0,abs($nt*$h), $w-$off,1, $w,1); } } else { for($x=0;$x<$w;$x++){ $nx=$rdmod? $x : $w-$x; $off=round((1-$gradient)*$h*($nx/$w)); $t=((1-pow(1-pow(($nx/$w),2),0.5))*(1-$gradient)+($nx/$w)*$gradient); $nt=$rdmod? $t : 1-$t; if(abs(0.5-$nt)<$min){ $min=abs(0.5-$nt); $natx=$off; } imagecopyresampled($image,$li, $x,round($off/2), abs($nt*$w),0, 1,$h-$off, 1,$h); } } imagedestroy($li); imageantialias($image,false); imagealphablending($image,false); imagesavealpha($image,true); $i=imagecreatetruecolor(($w+$naty)/$mult,($h+$natx)/$mult); imagealphablending($i,false); imagefilledrectangle($i,0,0,($w+$naty)/$mult,($h+$natx)/$mult,$col); imagealphablending($i,true); imageantialias($i,true); imagecopyresampled($i,$image,0,0,0,0,($w+$naty)/$mult,($h+$natx)/$mult,$w,$h); imagedestroy($image); imagealphablending($i,false); imageantialias($i,false); imagesavealpha($i,true); return $i; } $img=perspective("http://i.imgur.com/iX5Aski.png",0.2,RIGHT,0xFFFFFF,127);

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