Why question mark instead of text in PDO?
470
UTF-8 all the way through
120636
What is the question mark's significance in MySQL at "WHERE column = ?"?
1831
Can PHP PDO Statements accept the table or column name as parameter?
9173
What are the PHP operators "?" and ":" called and what do they do?
135172
Fully Understanding PDO ATTR_PERSISTENT
138421
PDO vs pg_* functions
8989
When to use single quotes, double quotes, and backticks in MySQL
81852
PHP output showing little black diamonds with a question mark
39565
How to make MySQL handle UTF-8 properly
70197
Question mark instead of number for reference
123619
Shouldn't mysql_real_escape_string() leave slashes in Database?
131658
What is ?: in PHP 5.3?
75027
Why is using a mysql prepared statement more secure than using the common escape functions?
4772
Difference between "not equal" operators  and != in PHP
36988
Question mark in SQT
143654
'At' symbol before variable name in PHP: @$_POST
11676
Why do the less than symbol () appear wrong as upside down exclamation (¡) or question mark (¿)?