当我在phpMyAdmin(SQL选项卡)中像这样调用过程时,它可以正常工作:
CALL `test_discount`('022979', 1101, 1, 'W', 100, @p5); SELECT @p5 AS `discount`;
但是,当我这样称呼它时PHP
:
$res = $conn->query("CALL `test_discount`('022979', 1101, 1, 'W', 100, @p5); SELECT @p5 AS `discount`;");
我收到语法错误: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SELECT @p5 AS discount' at line 1
如何在PHP中使用它?
问题是mySQL在单个query
调用中不支持多个语句:http : //php.net/manual/en/mysqli.quickstart.multiple-statement.php
例如,给出以下代码(来自上面的链接):
<?php
$mysqli = new mysqli("example.com", "user", "password", "database");
$res = $mysqli->query("SELECT 1; DROP TABLE mysql.user");
if (!$res) {
echo "Error executing query: (" . $mysqli->errno . ") " . $mysqli->error;
}
?>
您将收到以下输出:
Error executing query: (1064) You have an error in your SQL syntax;
check the manual that corresponds to your MySQL server version for the right syntax
to use near 'DROP TABLE mysql.user' at line 1
解决方案:使用多查询:
$mysqli->multi_query( "CALL `test_discount`('022979', 1101, 1, 'W', 100, @p5); SELECT @p5 AS `discount`;" );
编辑:另请参阅:
multi_query
用于调用过程的示例:
$mysqli = new mysqli( "HOST", "USR", "PWD", "DBNAME" );
$ivalue=1;
$res = $mysqli->multi_query( "CALL myproc($ivalue,@x);SELECT @x" );
if( $res ) {
$results = 0;
do {
if ($result = $mysqli->store_result()) {
printf( "<b>Result #%u</b>:<br/>", ++$results );
while( $row = $result->fetch_row() ) {
foreach( $row as $cell ) echo $cell, " ";
}
$result->close();
if( $mysqli->more_results() ) echo "<br/>";
}
} while( $mysqli->next_result() );
}
$mysqli->close();
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