如何通过PHP取得MySQL procedure结果
总有网友问我,如何通过php调用MySQL的存储过程同时取得返回的结果集呢?确实,MySQL的存储过程大大方便了编程也提高了效率。但是,对于那些还在用php 4 的同学们来说可就麻烦了,因为php 4只能调用存储过程,但却无法直接取得返回结果集;不过,用php 5的mysqli函数就可以做到了。首先,重新编译php 5,增加对mysqli的支持,或者直接下载mysqli的扩展模块,这里不再细说。直接举个例子吧:
1、创建存储过程,列出 test 库下的所有表:
<p>mysql>DELIMITER //</p><p>mysql>CREATE PROCEDURE `yejr`()</p><p>->BEGIN</p><p>->SHOW TABLES;</p><p>->END; //</p><p>Query OK, 0 rows affected (0.12 sec)</p><p>mysql>DELIMITER ;</p><p>mysql>CALL yejr();</p><p>+------------------+</p><p>| Tables_in_test |</p><p>+------------------+</p><p>| yejr1 |</p><p>| yejr2 |</p><p>+------------------+</p> Copy after login |
2、用 mysqli 编写测试代码:
<p>$mysqli = new mysqli("localhost", "root", "", "test");</p><p>if (mysqli_connect_errno()) {</p><p>printf("Connect failed: %sn", mysqli_connect_error());</p><p>exit();</p><p>}</p><p>$query = "call yejr();";</p><p>if ($result = $mysqli->query( $query)) {</p><p>while($row = $result->fetch_row())</p><p>{</p><p>printf ("find table: %s n", $row[0]);</p><p>}</p><p>}</p><p>$result->close();</p><p>?><br></p> Copy after login |
结果大致如下:
find table: yejr1
find table: yejr2
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