php+batik 实现导出highchart图片功能

function svgToImg($type, $svg, $filename){
clearFile(SAVE_PATH);//删除过期文件
ini_set('magic_quotes_gpc', 'off');
$svg = (string) $svg;
$filename = (string) $filename;
// prepare variables
if (!$filename or !preg_match('/^[A-Za-z0-9\-_ ]+$/', $filename)) {
$filename = 'chart';
}
if (get_magic_quotes_gpc()) {
$svg = stripslashes($svg);
}
// check for malicious attack in SVG
if(strpos($svg,"<!ENTITY") !== false || strpos($svg,"<!DOCTYPE") !== false){
exit("Execution is stopped, the posted SVG could contain code for a malicious attack");
}
$tempName = md5(rand());
// allow no other than predefined types
if ($type == 'image/png') {
$typeString = '-m image/png';
$ext = 'png';
} elseif ($type == 'image/jpeg') {
$typeString = '-m image/jpeg';
$ext = 'jpg';
} elseif ($type == 'application/pdf') {
$typeString = '-m application/pdf';
$ext = 'pdf';
} elseif ($type == 'image/svg+xml') {
$ext = 'svg';
} else { // prevent fallthrough from global variables
$ext = 'txt';
}
$outfile = SAVE_PATH.$tempName.'.'.$ext;
if (isset($typeString)) {
// size
$width = '';
if ($_POST['width']) {
$width = (int)$_POST['width'];
if ($width) $width = "-w $width";
}
// generate the temporary file
if (!file_put_contents(SAVE_PATH."$tempName.svg", $svg)) {
die("Couldn't create temporary file. Check that the directory permissions for
the /temp directory are set to 777.");
}
if(IS_WIN){
$output = shell_exec("java -jar ". BATIK_PATH ." $typeString -d $outfile $width ".SAVE_PATH."$tempName.svg");
}else{
$output = shell_exec("/usr/local/jdk1.8.0_66/bin/java -jar ". BATIK_PATH ." $typeString -d $outfile $width ".SAVE_PATH."$tempName.svg");
}
 
// catch error
if (!is_file($outfile)) {
 echo "<pre class="brush:php;toolbar:false;">$output