php在线生成ico文件的代码

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我是靠谱客的博主自然蓝天，最近开发中收集的这篇文章主要介绍php在线生成ico文件的代码，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

index.php

复制代码代码如下:

<?PHP 
$output = ""; 
if(isset($_GET['action'])&&$_GET['action'] == 'make'){ 
    if(isset($_FILES['upimage']['tmp_name']) && $_FILES['upimage']['tmp_name'] && is_uploaded_file($_FILES['upimage']['tmp_name'])){ 
        if($_FILES['upimage']['type']>210000){ 
            echo "你上传的文件体积超过了限制 最大不能超过200K"; 
            exit(); 
        } 
        $fileext = array("image/pjpeg","image/gif","image/x-png"); 
        if(!in_array($_FILES['upimage']['type'],$fileext)){ 
            echo "你上传的文件格式不正确 仅支持 jpg，gif，png"; 
            exit(); 
        } 
        if($im = @imagecreatefrompng($_FILES['upimage']['tmp_name']) or $im = @imagecreatefromgif($_FILES['upimage']['tmp_name']) or $im = @imagecreatefromjpeg($_FILES['upimage']['tmp_name'])){ 
            $imginfo = @getimagesize($_FILES['upimage']['tmp_name']); 
            if(!is_array($imginfo)){ 
                echo "图形格式错误！"; 
            } 
            switch($_POST['size']){ 
                case 1; 
                    $resize_im = @imagecreatetruecolor(16,16); 
                    $size = 16; 
                    break; 
                case 2; 
                    $resize_im = @imagecreatetruecolor(32,32); 
                    $size = 32; 
                    break; 
                case 3; 
                    $resize_im = @imagecreatetruecolor(48,48); 
                    $size = 48; 
                    break; 
                default; 
                    $resize_im = @imagecreatetruecolor(32,32); 
                    $size = 32; 
                    break; 
            } 
            imagecopyresampled($resize_im,$im,0,0,0,0,$size,$size,$imginfo[0],$imginfo[1]); 
            include "phpthumb.ico.php"; 
            $icon = new phpthumb_ico(); 
            $gd_image_array = array($resize_im); 
            $icon_data = $icon->GD2ICOstring($gd_image_array); 
            $filename = "temp/".date("Ymdhis").rand(1,1000).".ico"; 
            if(file_put_contents($filename, $icon_data)){ 
                $output = "生成成功！请点右键->另存为 保存到本地<br><a href=\"".$filename."\" target=\"_blank\">点击下载</a>"; 
            } 

        }else{ 
            echo "生成错误请重试！"; 
        } 

    }     

} 
?> 
<html> 
<head> 
<title>ICO图标在线转换</title> 
<style> 
body{background-color:#fff;color:#000000;font-family:arial;margin:30px;font-size:12px;} 
table{border:0} 
td{line-height:16px;} 
label{cursor:hand;} 
</style> 
</head> 
<body> 
<h1>ICO图标在线转换</h1> 
<form action="?action=make" method="post" enctype='multipart/form-data'> 
<table> 
    <tr> 
        <td><b>请上传你要转换的图片</b><br>支持格式 png，jpg，gif</td> 
    </tr> 
    <tr> 
        <td><input type="file" name="upimage" size="30"></td> 
    </tr> 
    <tr> 
        <td>目标尺寸： 
        <input type="radio" name="size" value="1" id="s1"><label for="s1">16*16</label> 
        <input type="radio" name="size" value="2" id="s2" checked><label for="s2">32*32</label> 
        <input type="radio" name="size" value="3" id="s3"><label for="s3">48*48</label> 
        </td> 
    </tr> 
    <tr> 
        <td align="right"><input type="submit" value="生　成"></td> 
    </tr> 
    <?PHP 
    if($output){ 
        echo "<tr><td><div style=\"border:1px solid #D8D8B2;background-color:#FFFFDD;padding:10px\">".$output."</div></td></tr>"; 
    } 
    ?> 
    <tr> 
        <td><div style="color:#cccccc;font-size:11px;">Powered by <a href="http://veryim.com" style="color:#cccccc">非常爱漫</a> </div></td> 
    </tr> 
</table> 
</form> 
</body> 
</html>

phpthumb.ico.php

复制代码代码如下:

<?php
//////////////////////////////////////////////////////////////
///  phpThumb() by James Heinrich <info@silisoftware.com>   //
//        available at http://phpthumb.sourceforge.net     ///
//////////////////////////////////////////////////////////////
///                                                         //
// phpthumb.ico.php - .ICO output format functions          //
//                                                         ///
//////////////////////////////////////////////////////////////


class phpthumb_ico {

    function phpthumb_ico() {
        return true;
    }


    function GD2ICOstring(&$gd_image_array) {
        foreach ($gd_image_array as $key => $gd_image) {

            $ImageWidths[$key]  = ImageSX($gd_image);
            $ImageHeights[$key] = ImageSY($gd_image);
            $bpp[$key]          = ImageIsTrueColor($gd_image) ? 32 : 24;
            $totalcolors[$key]  = ImageColorsTotal($gd_image);

            $icXOR[$key] = '';
            for ($y = $ImageHeights[$key] - 1; $y >= 0; $y--) {
                for ($x = 0; $x < $ImageWidths[$key]; $x++) {
                    $argb = $this->GetPixelColor($gd_image, $x, $y);
                    $a = round(255 * ((127 - $argb['alpha']) / 127));
                    $r = $argb['red'];
                    $g = $argb['green'];
                    $b = $argb['blue'];

                    if ($bpp[$key] == 32) {
                        $icXOR[$key] .= chr($b).chr($g).chr($r).chr($a);
                    } elseif ($bpp[$key] == 24) {
                        $icXOR[$key] .= chr($b).chr($g).chr($r);
                    }

                    if ($a < 128) {
                        @$icANDmask[$key][$y] .= '1';
                    } else {
                        @$icANDmask[$key][$y] .= '0';
                    }
                }
                // mask bits are 32-bit aligned per scanline
                while (strlen($icANDmask[$key][$y]) % 32) {
                    $icANDmask[$key][$y] .= '0';
                }
            }
            $icAND[$key] = '';
            foreach ($icANDmask[$key] as $y => $scanlinemaskbits) {
                for ($i = 0; $i < strlen($scanlinemaskbits); $i += 8) {
                    $icAND[$key] .= chr(bindec(str_pad(substr($scanlinemaskbits, $i, 8), 8, '0', STR_PAD_LEFT)));
                }
            }

        }

        foreach ($gd_image_array as $key => $gd_image) {
            $biSizeImage = $ImageWidths[$key] * $ImageHeights[$key] * ($bpp[$key] / 8);

            // BITMAPINFOHEADER - 40 bytes
            $BitmapInfoHeader[$key]  = '';
            $BitmapInfoHeader[$key] .= "\x28\x00\x00\x00";                              // DWORD  biSize;
            $BitmapInfoHeader[$key] .= $this->LittleEndian2String($ImageWidths[$key], 4);      // LONG   biWidth;
            // The biHeight member specifies the combined
            // height of the XOR and AND masks.
            $BitmapInfoHeader[$key] .= $this->LittleEndian2String($ImageHeights[$key] * 2, 4); // LONG   biHeight;
            $BitmapInfoHeader[$key] .= "\x01\x00";                                      // WORD   biPlanes;
               $BitmapInfoHeader[$key] .= chr($bpp[$key])."\x00";                          // wBitCount;
            $BitmapInfoHeader[$key] .= "\x00\x00\x00\x00";                              // DWORD  biCompression;
            $BitmapInfoHeader[$key] .= $this->LittleEndian2String($biSizeImage, 4);            // DWORD  biSizeImage;
            $BitmapInfoHeader[$key] .= "\x00\x00\x00\x00";                              // LONG   biXPelsPerMeter;
            $BitmapInfoHeader[$key] .= "\x00\x00\x00\x00";                              // LONG   biYPelsPerMeter;
            $BitmapInfoHeader[$key] .= "\x00\x00\x00\x00";                              // DWORD  biClrUsed;
            $BitmapInfoHeader[$key] .= "\x00\x00\x00\x00";                              // DWORD  biClrImportant;
        }


        $icondata  = "\x00\x00";                                      // idReserved;   // Reserved (must be 0)
        $icondata .= "\x01\x00";                                      // idType;       // Resource Type (1 for icons)
        $icondata .= $this->LittleEndian2String(count($gd_image_array), 2);  // idCount;      // How many images?

        $dwImageOffset = 6 + (count($gd_image_array) * 16);
        foreach ($gd_image_array as $key => $gd_image) {
            // ICONDIRENTRY   idEntries[1]; // An entry for each image (idCount of 'em)

            $icondata .= chr($ImageWidths[$key]);                     // bWidth;          // Width, in pixels, of the image
            $icondata .= chr($ImageHeights[$key]);                    // bHeight;         // Height, in pixels, of the image
            $icondata .= chr($totalcolors[$key]);                     // bColorCount;     // Number of colors in image (0 if >=8bpp)
            $icondata .= "\x00";                                      // bReserved;       // Reserved ( must be 0)

            $icondata .= "\x01\x00";                                  // wPlanes;         // Color Planes
            $icondata .= chr($bpp[$key])."\x00";                      // wBitCount;       // Bits per pixel

            $dwBytesInRes = 40 + strlen($icXOR[$key]) + strlen($icAND[$key]);
            $icondata .= $this->LittleEndian2String($dwBytesInRes, 4);       // dwBytesInRes;    // How many bytes in this resource?

            $icondata .= $this->LittleEndian2String($dwImageOffset, 4);      // dwImageOffset;   // Where in the file is this image?
            $dwImageOffset += strlen($BitmapInfoHeader[$key]);
            $dwImageOffset += strlen($icXOR[$key]);
            $dwImageOffset += strlen($icAND[$key]);
        }

        foreach ($gd_image_array as $key => $gd_image) {
            $icondata .= $BitmapInfoHeader[$key];
            $icondata .= $icXOR[$key];
            $icondata .= $icAND[$key];
        }

        return $icondata;
    }

    function LittleEndian2String($number, $minbytes=1) {
        $intstring = '';
        while ($number > 0) {
            $intstring = $intstring.chr($number & 255);
            $number >>= 8;
        }
        return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
    }

    function GetPixelColor(&$img, $x, $y) {
        if (!is_resource($img)) {
            return false;
        }
        return @ImageColorsForIndex($img, @ImageColorAt($img, $x, $y));
    }

}

?>