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Asked 3 years ago
17 Jun 2021
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Jules

Jules posted

using a php variable in the WHERE clause of a mysql query

using a php variable in the WHERE clause of a mysql query
QuickIos

QuickIos
answered Apr 28 '23 00:00

You can use a PHP variable in the WHERE clause of a MySQL query by including it in the SQL query string. Here's an example:



$variable = "some_value";
$query = "SELECT * FROM my_table WHERE column1 = '$variable'";

$result = mysqli_query($connection, $query);

In this example, the $variable PHP variable contains the value you want to filter on, and the $query variable is the SQL query string that includes the WHERE clause. The = operator is used to compare the value in column1 to the value in $variable.

Note that if the value of $variable comes from user input, it should be properly escaped and sanitized to prevent SQL injection attacks. You can use the mysqli_real_escape_string () function to escape any user input used in the query.

Also, be careful to properly quote and format the variable in the SQL query string. If the variable is a string, it should be enclosed in quotes in the query. If the variable is an integer or other numeric type, it should not be enclosed in quotes.
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