### Class
~~~
<?php
namespace App\Libs;
class Iconv {
function phpmake_ico() {
return true;
}
function GDtoICOstr(&$gd_ico_array) {
foreach ($gd_ico_array as $key => $gd_image) {
$IcoWidths[$key] = ImageSX($gd_image);
$IcoHeights[$key] = ImageSY($gd_image);
$bpp[$key] = ImageIsTrueColor($gd_image) ? 32 : 24;
$totalcolors[$key] = ImageColorsTotal($gd_image);
$icXOR[$key] = '';
for ($y = $IcoHeights[$key] - 1; $y >= 0; $y--) {
for ($x = 0; $x < $IcoWidths[$key]; $x++) {
$argb = $this->gpc($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';
}
}
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_ico_array as $key => $gd_image) {
$biSizeImage = $IcoWidths[$key] * $IcoHeights[$key] * ($bpp[$key] / 8);
$bfh[$key] = '';
$bfh[$key] .= "\x28\x00\x00\x00";
$bfh[$key] .= $this->le2s($IcoWidths[$key], 4);
$bfh[$key] .= $this->le2s($IcoHeights[$key] * 2, 4);
$bfh[$key] .= "\x01\x00";
$bfh[$key] .= chr($bpp[$key])."\x00";
$bfh[$key] .= "\x00\x00\x00\x00";
$bfh[$key] .= $this->le2s($biSizeImage, 4);
$bfh[$key] .= "\x00\x00\x00\x00";
$bfh[$key] .= "\x00\x00\x00\x00";
$bfh[$key] .= "\x00\x00\x00\x00";
$bfh[$key] .= "\x00\x00\x00\x00";
}
$icondata = "\x00\x00";
$icondata .= "\x01\x00";
$icondata .= $this->le2s(count($gd_ico_array), 2);
$dwImageOffset = 6 + (count($gd_ico_array) * 16);
foreach ($gd_ico_array as $key => $gd_image) {
$icondata .= chr($IcoWidths[$key]);
$icondata .= chr($IcoHeights[$key]);
$icondata .= chr($totalcolors[$key]);
$icondata .= "\x00";
$icondata .= "\x01\x00";
$icondata .= chr($bpp[$key])."\x00";
$dwBytesInRes = 40 + strlen($icXOR[$key]) + strlen($icAND[$key]);
$icondata .= $this->le2s($dwBytesInRes, 4);
$icondata .= $this->le2s($dwImageOffset, 4);
$dwImageOffset += strlen($bfh[$key]);
$dwImageOffset += strlen($icXOR[$key]);
$dwImageOffset += strlen($icAND[$key]);
}
foreach ($gd_ico_array as $key => $gd_image) {
$icondata .= $bfh[$key];
$icondata .= $icXOR[$key];
$icondata .= $icAND[$key];
}
return $icondata;
}
function le2s($number, $minbytes=1) {
$intstring = '';
while ($number > 0) {
$intstring = $intstring.chr($number & 255);
$number >>= 8;
}
return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
}
function gpc(&$img, $x, $y) {
if (!is_resource($img)) {
return false;
}
return @ImageColorsForIndex($img, @ImageColorAt($img, $x, $y));
}
}
?>
~~~
### Controller
~~~
if ( $error['text'] == "" && isset($_FILES['upimage']['tmp_name']) && $_FILES['upimage']['tmp_name'] && is_uploaded_file($_FILES['upimage']['tmp_name'])) {
if ($_FILES['upimage']['type'] > 210000) {
$error['text'] = "你上传的文件体积超过了限制 最大不能超过200k";
} else {
$fileext = array("image/pjpeg", "image/gif", "image/x-png", "image/png", "image/jpeg", "image/jpg");
if (!in_array($_FILES['upimage']['type'], $fileext)) {
$error['text'] = "你上传的文件格式不正确 仅支持 jpg，gif，png";
}else {
if ($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)) {
$error['text'] = "图形格式错误！";
}else {
switch ($_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;
case 4;
$resize_im = @imagecreatetruecolor(64, 64);
$size = 64;
break;
case 5;
$resize_im = @imagecreatetruecolor(128, 128);
$size = 128;
break;
default;
$resize_im = @imagecreatetruecolor(64, 64);
$size = 64;
break;
}
imagecopyresampled($resize_im, $im, 0, 0, 0, 0, $size, $size, $imginfo[0], $imginfo[1]);
$icon = new Iconv();
$gd_image_array = array($resize_im);
$icon_data = $icon->GDtoICOstr($gd_image_array);
$filename = "temp/" . date("Ymdhis") . rand(1, 1000) . ".ico";
if (file_put_contents($filename, $icon_data)) {
// $output = "生成成功！请点右键->另存为 保存到本地<br><a href="/" mce_href="/""".$filename."/" target=/"_blank/">点击下载</a>";
// echo $filename;
//数据展示
$icon_arr=[
'class'=>'',
'time'=>date("Y-m-d H:i:s"),
'filename'=>$_FILES['upimage']['name'],
'filepath'=>$filename,
'size'=>$size
];
}
}
} else {
$error['text'] = "生成错误请重试";
}
}
}
}else{
$error['text'] = "请选择图片!";
}
~~~
### 展示效果
### 源码地址
ico在线转换工具已经集成到了开源项目 [https://github.com/diandianxiyu/ApiTesting](https://github.com/diandianxiyu/ApiTesting) 中 ，在线demo地址稍后再放出
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