php - MySQL query parse error - 


$week_leave = mysql_query("select count(id),leave.id `leave`, `users` leave.backgroundcolor = 'green' , leave.id=(select u_id `users` users.username='$_session['username']')");

gives following error: 

parse error: syntax error, unexpected '' (t_encapsed_and_whitespace), expecting identifier (t_string) or variable (t_variable) or number (t_num_string)

i know problem lies in sub query. suggestions ?

try have set data vetween curly braces {$_session['username']}

$week_leave = mysql_query("select count(id),leave.id `leave`, `users` leave.backgroundcolor = 'green' , leave.id=(select u_id `users` users.username='{$_session['username']}')");

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