CODEWITHSUNDEEP
phpmysqlsql
NadirDev
NadirDev

Reputation: 71

SQL query syntax error, negative number not possible?

I receive the following error, the error contains a SQL syntax problem. I would not know what the problem is because everything seems fine. I can see a negative number in $range_start (-4). What would be the problem? Should I add anything at the negative number in the SQL query?

(It's a pagination and it works fine in other SQL queries)

Thanks in advance.

Error:

Array
(
    [0] => 42000
    [1] => 1064
    [2] => 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 ''4'' at line 1
)

Code:

$getPostsByCategory = $this->db->prepare("SELECT * FROM articles WHERE category = :category ORDER by date_created DESC LIMIT " . $range_start . ", " . $range_end . "");

Upvotes: 1

Views: 680

Answers (2)

Lajos Arpad
Lajos Arpad

Reputation: 77118

The LIMIT keyword specifies that you want a subset of the elements. $range_start is the offset, that is, the first index of the result you want, while $range_end is the number of elements you want. As a result, both of these need to be positive integers, so $range_start cannot be negative, as you cannot load the elements, starting from the -4th.

Upvotes: 2

Ohgodwhy
Ohgodwhy

Reputation: 50808

Strings need to be encapsulated by either a quote or apostrophe depending on whether your string was constructed with quotes or apostrophes.

In this case, I would recommend the following:

'" . $range_start . "', '" . $range_end . "'

Note the use of apostrophe's before and after.

Upvotes: 0

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