<?php header("content-type:image/jpeg"); /*一、简单的图像输出*/ $im = imagecreate(60,40); $pink = imagecolorallocate($im,35, 25,220); imagejpeg($im); //imagestring($im,16, 200, 200,"I LOVE YOU",); /* 二、将字符串写入到图片中 */ //载入图片 $me=imagecreatefromjpeg("../../images/3.jpg"); //设置字体颜色 $text_color = imagecolorallocate($me, 255,84,0); //设置的字体的位置 $font = "C:\Windows\Fonts\simkai.ttf"; //要写入的字符串 $str = iconv('GBK',"UTF-8", "php开发..."); //将字符串写入到图片中 imagettftext($me,20,0,50,50, $text_color,$font, $str); //输出图片 imagejpeg($me); //释放资源 imagedestroy($me);
session_start(); header("content-type:image/jpeg"); //验证码 //图像宽度 $image_width =65; //图像高度 $image_height =45; //设置随机数的种子 //srand(microtime()*1000); for ($i=0;$i<6;$i++){ $new_str .=dechex(rand(0, 100)); } $_SESSION[code]=$new_str; $image = imagecreate($image_width, $image_height); imagecolorallocate($image,rand(0,255), rand(0,255),rand(0,255)); for ($i=0;$i<strlen($_SESSION[code]);$i++){ $font = mt_rand(3, 8);//生成随机字体大小 $x = mt_rand(3,10)+$image_width*$i/4; $y = mt_rand(3,$image_height/4); $color = imagecolorallocate($image,mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255)); imagestring($image, $font, $x, $y,$_SESSION[code][$i], $color); } imagepng($image); imagedestroy($image);