如何把Base64编码存的图，解码以后的结果保存成图，存在内存里？或者把图直接显示在浏览器上？

Question

如何把Base64编码存的图，解码以后的结果保存成图，存在内存里？或者把图直接显示在浏览器上？情况是这样，有一个Base64编码的字符串，里面存的是图片，我解码后得到的字符串，存在硬盘上可以调用显示。但是现在不允许在服务器的硬盘上保存文件，要在浏览器上直接输出显示图片，什么弄？我的思路是：1 将解码后得到的字符串直接输出成图片。
            2 保存图到内存，然后读内存里的图显示出来。这样可行么？具体怎么弄？

Answer 1

直接用php在页面输出：$data=$_POST['pic_data'];
$data=base64_decode($data);
$im=imagecreatefromstring($data);
if($im){
     header('Content-type:image/jpeg');
   imagejpeg($im,'test.jpg');
}

Answer 2

$imgCode = "你的base64encode串";
echo "<img src='data:*/*;base64,{$imgCode}' width=200 height=200>";

Answer 3

试了，但是图片不显示。 什么原因？ if($element->nodeName=="img")
{
$str = $element->getAttribute("xd:inline");
$data=base64_decode($str);
$im=imagecreatefromstring($data);
if($im)
{
      header('Content-type:image/jpeg');
    imagejpeg($im,'test.jpg');
}
    } 

Answer 4

也不显示，查看图的地址是： data:*/*;base64,/9j/4AAQSkZJRgABAQEAYABgAAD......

Answer 5

sorry,ie不支持。。我说yslow怎么把这一条优化建议去掉了呢。

Answer 6

imagejpeg($im,'test.jpg'); --> imagejpeg($im); 

Answer 7

<?php
$data=base64_decode('R0lGODlhXQAVANUAAP////Pz8+bm5tnZ2c3NzcDAwLOzs5mZmY2NjeR+ANp6A9l5A4CAgM51BsNwCsNwCbhrDXNzc61nEKxmEKFiE6JiE2ZmZpddFpZdFoxZGYtYGoFUHYBUHVlZWXZPIHVPIGtLI2pKI01NTV9GJlRBKVRBKkBAQEk8LT44MD03MDMzMwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAAHAP8ALAAAAABdABUAAAb/QJVwSCwaj8ikUgjxLJ9Gj+JELBSg2OwyodFCSYkKkUDwms3cs5E0GlYSVCFZTX+m60IpSnhKXIZzeEonI21HKIVxQlyIhkaEjkVOQg2TKhIKKggHAgIHCEMmByZEERFCHaAmEQcHp0ckDgmzCxlEKG+zCRAkiw4LtCBEIw26CbZFEIYXD0MeCSQBANMAAUMWABZjZSoHAAzS1AGvQyAJDRwjIRQJDnsoshSFGAsLVLPKIbKGz+jq7A6KjBCjAsweFSgSbJDD7Vq2bUK8ARjwKsIAAORQLHBHREKaCQlKEDmhIYWKdkNSLKCg4sTGg3nuDGm2yJGCPyoCOdQGiJu3/wGkQg0IEJQDtCEjIJwr0QdDEpkqIEBQgQGOkQkLilSIAwFZ1Kk5GwrBxpNhxIdFsDFg0oDPmwUchIxIEKkIVKlRAxrZQJdIBkNdh+ANmxat2W4AkAA4wOQBigyzMJgUEqIvkrtTB0uyLOQvE6+DdY41TBhxUCImFgupqmCXIhInSkC120Xw1Kow3SSYLGTr55kSDu+EiJhxEW8d+CRYEAmMUwgLehERdrI2k6mygxMBw5IIzZOOjgkpIECIieQmAlxBBcDntLVDGABYL8QoBGEoNtSjUqKeBxQneFCMSJgJocEuwpyQgQIN8KbCQEIYJFcC1EXQHiflqSDfAAcYIJ+NexdxeECIpwnxATC6QKBICbLo0kAIi1j31RAcoIiPg1Et890FCcAUgQAACACfChZVY8AA7nVz0URDFpFCCBp8oAgRJWigAYxDSDlMJCl8oAEHIkUxRCVDKABWFoF4I8iaUOgRkyVIdFCWCgKspyabeCLBxphtLVEAAKoYgNadeRZ6BF9wImHCku8NQaihkAqRXxasICACEalEqqkRQQAAOw==');
$im=imagecreatefromstring($data);
if($im){
header('Content-type:image/jpeg');
imagejpeg($im);
}
?>楼主测试下上一段，可以成功的

Answer 8

我试了，但是还是没有显示图，显示的是字符啊。我的IE或者PHP是不是有地方要设置一下？

Answer 9

<?php
$data=base64_decode('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');
echo $data;
?>
这样也可以显示图片。
虽然blueforyou的方法可以显示图片，但是如果像下面这段代码就不行了。
<?php
$data=base64_decode('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');
$im=imagecreatefromstring($data);
if($im){
    header('Content-type:image/jpeg');
    imagejpeg($im);
}
echo "test";
?>
最后加了一个echo。
貌似图片和文字不能同时显示啊。

Answer 10

就是echo "test";
test显示不了

Answer 11

<?php 
$data=base64_decode('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'); 
echo $data; 
?>
echo $data;显示不了没刷新。。

Answer 12

这个我试了， IE7环境。但是显示的结果如下：GIF89a]ÕÿÿÿóóóæææÙÙÙÍÍÍÀÀÀ³³³™™™ä~ÚzÙy€€€ÎuÃp Ãp ¸k sss­g¬f¡b¢bfff—]–]ŒY‹XT€TYYYvO uO kK#jJ#MMM_F&TA)TA*@@@I<->80=70333!ùÿ,]ÿ@•pH,È¤Rñ,ŸFâD, Øì2¡ÑBI‰ ‘@ğšÍܳ‘4VT!YM¦ëB)JxJ\†sxJ'#mG(…qB\ˆ†F„ŽENB “* *C&&DB &§G$ ³ D(o³ $‹ ´ D# º ¶E†C $
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Answer 13

看下php.ini的设置，有没有对图形处理的支持
extension=php_gd2.dll

Answer 14

怎么还没搞定呢。。
header函数执行之前不要有任何输出。
或者你就将下面的代码copy到某一个单独的文件测试。
<?php
$data=base64_decode('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');
header('Content-type:image/jpeg'); 
echo $data; 
?>

Answer 15

我试了好几次了，还是不行，我怀疑我的PHP坏了。

Answer 16

我看了，但是我看不出毛病  ; Windows Extensions
; Note that ODBC support is built in, so no dll is needed for it.
; Note that many DLL files are located in the extensions/ (PHP 4) ext/ (PHP 5)
; extension folders as well as the separate PECL DLL download (PHP 5).
; Be sure to appropriately set the extension_dir directive.;extension=php_bz2.dll
;extension=php_curl.dll
;extension=php_dba.dll
;extension=php_dbase.dll
;extension=php_exif.dll
;extension=php_fdf.dll
extension=php_gd2.dll
;extension=php_gettext.dll
;extension=php_gmp.dll
;extension=php_ifx.dll
;extension=php_imap.dll
;extension=php_interbase.dll
;extension=php_ldap.dll
extension=php_mbstring.dll
;extension=php_mcrypt.dll
;extension=php_mhash.dll
extension=php_mime_magic.dll
;extension=php_ming.dll
;extension=php_msql.dll
;extension=php_mssql.dll
extension=php_mysql.dll
;extension=php_mysqli.dll
;extension=php_oci8.dll
;extension=php_openssl.dll
extension=php_pdo.dll
;extension=php_pdo_firebird.dll
;extension=php_pdo_mssql.dll
;extension=php_pdo_mysql.dll
;extension=php_pdo_oci.dll
;extension=php_pdo_oci8.dll
;extension=php_pdo_odbc.dll
;extension=php_pdo_pgsql.dll
;extension=php_pdo_sqlite.dll
;extension=php_pgsql.dll
;extension=php_pspell.dll
;extension=php_shmop.dll
;extension=php_snmp.dll
;extension=php_soap.dll
;extension=php_sockets.dll
extension=php_sqlite.dll
;extension=php_sybase_ct.dll
;extension=php_tidy.dll
;extension=php_xmlrpc.dll
;extension=php_xsl.dll
;extension=php_zip.dll