Preventivo Porte

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Whoops! There was an error.
0.
/­var/­www/­vhosts/­manda.it/­httpdocs/­preventivi/­index.php199

Whoops \ Exception \ ErrorException (E_NOTICE)

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Whoops\Exception\ErrorException thrown with message "Undefined variable: a2" Stacktrace: #0 in /var/www/vhosts/manda.it/httpdocs/preventivi/index.php:199

Undefined variable: a2

/var/www/vhosts/manda.it/httpdocs/preventivi/index.php
  $categoria = $row->categoria;
  $prezzo = explode(";", $prezzo);
  $a0=$prezzo[0];
  $a1=$prezzo[1];
  $a2=$prezzo[2];
  }
?>
   <div class="col-xs-4"><i class="fa fa-arrow-down" style="color:#05DF05" aria-hidden="true"></i> <?php echo $a2;?>€<br> Prezo <b>massimo</b> per <?php  echo $categoria;?></div>
   <div class="col-xs-4 text-center">Il prezzo medio è:<br> <?php echo $a1;?></div>
   <div class="col-xs-4 dfg56"><i class="fa fa-arrow-up" style="color:red" aria-hidden="true"></i> <?php echo $a0;?>€<br>Prezzo <b>minimo</b> per <?php  echo $categoria;?></div>
Key Value
categoria porte
empty
empty
empty
Key Value
_token 7109fc5079fd5b3a2d41661bd6386033
Key Value
PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PP_CUSTOM_PHP_INI /var/www/vhosts/system/manda.it/etc/php.ini
PP_CUSTOM_PHP_CGI_INDEX fastcgi
SCRIPT_NAME /preventivi/index.php
REQUEST_URI /preventivi/porte
QUERY_STRING categoria=porte
REQUEST_METHOD GET
SERVER_PROTOCOL HTTP/1.0
GATEWAY_INTERFACE CGI/1.1
REDIRECT_URL /preventivi/porte
REDIRECT_QUERY_STRING categoria=porte
REMOTE_PORT 35635
SCRIPT_FILENAME /var/www/vhosts/manda.it/httpdocs/preventivi/index.php
SERVER_ADMIN crisdany7@gmail.com
CONTEXT_DOCUMENT_ROOT /var/www/vhosts/manda.it/httpdocs
CONTEXT_PREFIX
REQUEST_SCHEME http
DOCUMENT_ROOT /var/www/vhosts/manda.it/httpdocs
REMOTE_ADDR 54.198.113.51
SERVER_PORT 80
SERVER_ADDR 164.132.104.152
SERVER_NAME www.manda.it
SERVER_SOFTWARE Apache
SERVER_SIGNATURE <address>Apache Server at www.manda.it Port 80</address>
HTTP_ACCEPT text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
HTTP_USER_AGENT CCBot/2.0 (http://commoncrawl.org/faq/)
HTTP_ACCEPT_ENCODING x-gzip, gzip, deflate
HTTP_CONNECTION close
HTTP_X_ACCEL_INTERNAL /internal-nginx-static-location
HTTP_X_REAL_IP 54.198.113.51
HTTP_HOST www.manda.it
SCRIPT_URI http://www.manda.it/preventivi/porte
SCRIPT_URL /preventivi/porte
UNIQUE_ID WZ5ZM38AAQEAACiF5rYAAAAD
REDIRECT_STATUS 200
REDIRECT_PP_CUSTOM_PHP_CGI_INDEX fastcgi
REDIRECT_PP_CUSTOM_PHP_INI /var/www/vhosts/system/manda.it/etc/php.ini
REDIRECT_SCRIPT_URI http://www.manda.it/preventivi/porte
REDIRECT_SCRIPT_URL /preventivi/porte
REDIRECT_UNIQUE_ID WZ5ZM38AAQEAACiF5rYAAAAD
FCGI_ROLE RESPONDER
PHP_SELF /preventivi/index.php
REQUEST_TIME_FLOAT 1503549747.5258
REQUEST_TIME 1503549747
empty
0. Whoops\Handler\PrettyPageHandler