[Php-java-bridge-users] about Chinese parameter encode

I use php-java-bridge-4.0.7 to invoke java function in php program at linux system.
  
 but the parameter of Chinese string in php program is changed in java function.
  
 The code is at the below.
  
 $myj = new Java("PdfConvertor");
$myj->generatePDFWithWatermark('/tmp/08.pdf','/tmp/a.pdf','中国通信标准化协会','center');
  
 The 3th parameter of the function generatePDFWithWatermark is Chinese.
  
 But the java class runs normally in terminal.
  
 I set parameters about encode to GBK in the file /etc/profile and php.ini.But it doesn't work.
  
 what's my problem?