[Ben]

Flesso is right. You added a WHERE clause near the end of your statement:

AND WHERE tel=$tel";

If you want to add clauses for 2 things, as you did, you use AND only; so another WHERE is not necessary, rather incorrect.

Cocatenation operators (.) to seperate two strings as flesso has quoted to you may not be required for variables, but certainly required for functions and variables that are mysql_fetch_object() results, etc.

And don't forget, when you're querying values for specific fields, etc., as flesso has done so, you add single-quotations, like:

DELETE FROM table1 WHERE username = '$var'

Correction:

$sql = "DELETE FROM table1 WHERE name = '$name' AND tel = '$tel'";
// then query the variable

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