I'm new to mac os, I have installed and configured nginx with php-fastcgi. I need to run this command in a terminal and keep that terminal open to access php files from my browser.

php-cgi -b 127.0.0.1:9000 -q

Here's the plist that I wrote by looking up sources on the internet

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Debug</key>
  <false/>
  <key>EnvironmentVariables</key>
  <dict>
    <key>PHP_FCGI_CHILDREN</key>
    <string>2</string>
    <key>PHP_FCGI_MAX_REQUESTS</key>
    <string>1000</string>
  </dict>
  <key>RunAtLoad</key>
  <true/>
    <key>KeepAlive</key>
    <true/>
    <key>UserName</key>
    <string>nikhil</string>
<key>Label</key>
  <string>php-fastcgi</string>
  <key>ProgramArguments</key>
  <array>
    <string>/usr/bin/php-cgi</string>
    <string>-b 127.0.0.1:9000</string>
    <string>-q</string>
  </array>
</dict>
</plist>

I'm loading it using launchctl load -w ~/Library/LaunchAgents/php-fastcgi.plist without any success, can anyone tell me how this can be done.