神秘的MYSQL语法错误-在phpMyadmin中工作正常，不在页面上

Question

Trying to get a list of expenses from a certain date, I can execute this SQL fine in PHPMyAdmin but on the page I am receiving a MYSQL Syntax Error.

The Code:

$full_date = date('d M Y', strtotime($date));

$get_expenses = mysql_query("SELECT Sum(cost) AS expense FROM expenses WHERE date = $full_date")or die(mysql_error());

$expenses = mysql_fetch_array( $get_expenses );

echo $expenses['expense'];

The syntax error I receive is:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Apr 2015' at line 1

I have checked to see the value of $expenses['expense'] and it returns a valid date. In PHPMyAdmin I can execute this SQL with no problems. Any pointers? Cheers!

Answer 1

尝试这样，在将您的日期转换成相应的格式之前，请像这样，

$get_expenses = mysql_query("SELECT Sum(cost) AS expense FROM expenses WHERE date = '$full_date'")or die(mysql_error());

Answer 2

SELECT Sum(cost) AS expense FROM expenses WHERE date = 13 Apr 2015

is not a valid query, but it's what you get from that expression.

You should surround the value with quotes, such as with:

$full_date = date('Y-m-d', strtotime($date));
$get_expenses = mysql_query("SELECT Sum(cost) AS expense FROM expenses WHERE date = '$full_date'") or die(mysql_error());