What does the ? character in this SQL query mean?
$res = $dbConn->fetchPairs('SELECT name FROM tree where parent = ?',$key);
What does the ? character in this SQL query mean? $res = $dbConn->fetchPairs(‘SELECT name
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What does the ? character in this SQL query mean?
$res = $dbConn->fetchPairs('SELECT name FROM tree where parent = ?',$key);
That’s a parameterized query. The ? is a placeholder for the actual value stored in $key.