mysql语句中的冒号是什么意思?
mysql语句中的冒号是什么意思?
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$db->bandVars(); 传递值
echo $check_query; 就知道了。
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可以看看手册的pdo类
<?php /* Execute a prepared statement by binding PHP variables */ $calories = 150; $colour = 'red'; $sth = $dbh->prepare('SELECT name, colour, calories FROM fruit WHERE calories bindParam(':calories', $calories, PDO::PARAM_INT); $sth->bindParam(':colour', $colour, PDO::PARAM_STR, 12); $sth->execute(); ?> <br><font color="#e78608">------解决方案--------------------</font><br>没有别的意思符号而已,以便区别于 sql 的语法成分<br>bindVars 方法将定义的符号与实际的变量关联起来 <br><font color="#e78608">------解决方案--------------------</font><br>
Example #1 Execute a prepared statement with named placeholders <?php /* Execute a prepared statement by binding PHP variables */ $calories = 150; $colour = 'red'; $sth = $dbh->prepare('SELECT name, colour, calories FROM fruit WHERE calories bindParam(':calories', $calories, PDO::PARAM_INT); $sth->bindParam(':colour', $colour, PDO::PARAM_STR, 12); $sth->execute(); ?> Example #2 Execute a prepared statement with question mark placeholders <?php /* Execute a prepared statement by binding PHP variables */ $calories = 150; $colour = 'red'; $sth = $dbh->prepare('SELECT name, colour, calories FROM fruit WHERE calories bindParam(1, $calories, PDO::PARAM_INT); $sth->bindParam(2, $colour, PDO::PARAM_STR, 12); $sth->execute(); ?> <div class="clear"> </div>