mysql語句中的冒號是什麼意思？該怎麼解決

mysql語句中的冒號是什麼意思？
mysql語句中的冒號是什麼意思？


------解決方案--------------------
$db->bandVars(); 傳遞值
echo $check_query; 就知道了。
------解決方案--------------------
可以看看手冊的pdo類

PHP code

prepare('SELECT name, colour, calories    FROM fruit    WHERE calories < :calories AND colour = :colour');$sth->bindParam(':calories', $calories, PDO::PARAM_INT);$sth->bindParam(':colour', $colour, PDO::PARAM_STR, 12);$sth->execute();?>
------解決方案--------------------
沒有別的意思符號而已，以便區別於 sql 的文法成分
bindVars 方法將定義的符號與實際的變數關聯起來
------解決方案--------------------

  

   PHP code
   
Example #1 Execute a prepared statement with named placeholdersprepare('SELECT name, colour, calories    FROM fruit    WHERE calories < :calories AND colour = :colour');$sth->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 placeholdersprepare('SELECT name, colour, calories    FROM fruit    WHERE calories < ? AND colour = ?');$sth->bindParam(1, $calories, PDO::PARAM_INT);$sth->bindParam(2, $colour, PDO::PARAM_STR, 12);$sth->execute();?> 
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