服务器500错误

服务器 不知道是什么操作 弄得服务器500错误
最终确定的地点在上图  这个函数附近   再找 就不知道是哪里的原因了。
出现500错误时 数据库在执行删除 用户信息。


以下是  再上图位置 截取的返回的日志
uid,email,username,password,status,emailstatus,avatarstatus,videophotostatus,adminid,groupid,groupexpiry,extgroupids,regdate,credits,notifysound,timeoffset,newpm,newprompt,accessmasks,allowadmincp,onlyacceptfriendpm,conisbind,freeze
array (
  'USER' => 'www-data',
  'HOME' => '/var/www',
  'FCGI_ROLE' => 'RESPONDER',
  'SCRIPT_FILENAME' => '/api/uc.php',
  'QUERY_STRING' => 'code=59beUf%2FzaaNmvaKGFJg7QP5oYuddkap5eOjaE%2BVFdjTTqTVcPMs%2BDdROwXQys%2BKWhFGGDelynD27DdrztB7GRS3XpUv7YAWRe8iF&__times__=1',
  'REQUEST_METHOD' => 'GET',
  'CONTENT_TYPE' => '',
  'CONTENT_LENGTH' => '',
  'SCRIPT_NAME' => '/api/uc.php',
  'REQUEST_URI' => '/api/uc.php?code=59beUf%2FzaaNmvaKGFJg7QP5oYuddkap5eOjaE%2BVFdjTTqTVcPMs%2BDdROwXQys%2BKWhFGGDelynD27DdrztB7GRS3XpUv7YAWRe8iF&__times__=1',
  'DOCUMENT_URI' => '/api/uc.php',
  'DOCUMENT_ROOT' => 'www',
  'SERVER_PROTOCOL' => 'HTTP/1.0',
  'GATEWAY_INTERFACE' => 'CGI/1.1',
  'SERVER_SOFTWARE' => 'nginx/1.4.4',
  'REMOTE_ADDR' => '182.76.15.11',
  'REMOTE_PORT' => '44725',
  'SERVER_ADDR' => '182.76.15.11',
  'SERVER_PORT' => '80',
  'SERVER_NAME' => '',
  'REDIRECT_STATUS' => '200',
  'HTTP_ACCEPT' => '*/*',
  'HTTP_ACCEPT_LANGUAGE' => 'zh-cn',
  'HTTP_USER_AGENT' => 'UCWEB/2.0 (iOS; U; iPh OS 7_1_2; zh-CN; iPh5,2) U2/1.0.0 UCBrowser/9.0.1.284 U2/1.0.0 Mobile',
  'HTTP_HOST' => 'www..com',
  'HTTP_CONNECTION' => 'Close',
  'HTTP_COOKIE' => '',
  'PHP_SELF' => '/api/uc.php',
  'REQUEST_TIME_FLOAT' => 1405691758.80632,
  'REQUEST_TIME' => 1405691758,
)

你在本机使用调试工具跟踪下试试。如果没有，可以在函数里增加exit('test1');之类的调试代码，看看执行到哪一步，退出了程序，然后再具体分析试试。