Radio Button issues

I am having a couple problems with the following code 1) I need to return the value of the radio button (True or False) 2) I need to wait on the file write until the data is changed if ($app_Security){ echo 'Yes','<input type="radio" name="security" value="True" checked>'; echo '&nbsp', 'No','<input type="radio" name="security" value="False">'; }else{ echo 'Yes','<input type="radio" name="security" value="True" >'; echo 'No','<input type="radio" name="security" value="False" checked>'; } $temp= 'Security=' + $value; $handle=(fopen("e:\\jon\\site_dev\\php-html\\configs\\phphtml.cfg","a+")); fwrite($handle, 'Security='); fwrite($handle, //value of radio button goes here ); fclose($handle); any help would be greatly appreciated Thanks in advance Jon