To include an array in a WHERE clause in MySQL /PHP, you can use the IN operator. Here's an example:
$my_array = array('value1', 'value2', 'value3');
$my_array_string = implode("','", $my_array);
$query = "SELECT * FROM my_table WHERE column1 IN ('$my_array_string')";
In this example, $my_array is the array of values you want to use in the WHERE clause, and $my_array_string is a string representation of the array with each value separated by a comma and enclosed in quotes. The implode() function is used to create this string.
The resulting SQL query will look like this:
SELECT * FROM my_table WHERE column1 IN ('value1', 'value2', 'value3')
This query will select all rows from my_table where the value in column1 is equal to any of the values in the $my_array array.