I'm trying to do this:
$sth = $dbi->prepare('INSERT INTO table VALUES (?, ?, ?)');
$sth->execute(
$var1,
$var2 || 'NOW()',
$var3
);
without any luck. Any ideas?
Bind parameters—also called dynamic parameters or bind variables—are an alternative way to pass data to the database. Instead of putting the values directly into the SQL statement, you just use a placeholder like ? , :name or @name and provide the actual values using a separate API call.
The MySQL database supports prepared statements. A prepared statement or a parameterized statement is used to execute the same statement repeatedly with high efficiency and protect against SQL injections. The prepared statement execution consists of two stages: prepare and execute.
EXECUTE the PREPARED statementEXECUTE stmt USING @variable_name; Here @variable_name will have the value which we want tp pass at the place of ? in the PREPARE statement. We need to set the value of @variable_name by using SET statement before executing the prepared statement.
Prepared statements are very useful against SQL injections, because parameter values, which are transmitted later using a different protocol, need not be correctly escaped. If the original statement template is not derived from external input, SQL injection cannot occur.
$sth = $dbi->prepare('INSERT INTO table VALUES (?, COALESCE(?, NOW()), ?)');
$sth->execute(
$var1,
$var2,
$var3
);
Functions cannot be bound parameters. MySQL will enclose them in quotes which is not valid syntax.
Your options are:
$now = time2str('%Y-%m-%d %T', time);
You can use the following coding also.
$sth = $dbi->prepare('INSERT INTO table VALUES (?, COALESCE(?, NOW()), ?)');
$sth->bind_param($var1,$var2,$var3);
$sth1=$sth->execute;
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