我想要一个能运行的php验证码程序,网上的试了不行,着急,求大神帮忙...答:<?php session_start();Header("Content-type: image/PNG");$im = imagecreate(44,18);$back = ImageColorAllocate($im, 245,245,245);imagefill($im,0,0,$back);$vcodes = "";srand((double)microtime()*1000000);for($i=0;$i<4;$i++){ $font = ImageColorAllocate($im, rand(...