php - What is the proper syntax for inserting variables into a SELECT statement? -

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i believe have simple syntax problem in sql statement. if run code, error in database query. 

$user = $_get['linevar']; echo $user;  // testing - url variable echos correctly $sql = "select * `useraccounts` `name` = $user"; $result = mysql_query($sql) or die("error in db query");

if replace $user in $sql string 'actualname' or known record in table, code works fine. using $ variable incorrectly in sql string?

you need surround value you're getting $user quotes, since it's not number:

$sql = "select * `useraccounts` `name` = '$user'";

just note, should read on sql injection, since code susceptible it. fix pass through mysql_real_escape_string():

$user = mysql_real_escape_string( $_get['linevar']);

you can replace or die(); logic bit more informative error message when bad happens, like:

or die("error in db query" . mysql_error());

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