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(PHP 8 >= 8.2.0)
mysqli::execute_query -- mysqli_execute_query — Prepares, binds parameters, and executes SQL statement
面向对象风格
过程化风格
Prepares the SQL query, binds parameters, and executes it. The mysqli::execute_query() method is a shortcut for mysqli::prepare(), mysqli_stmt::bind_param(), mysqli_stmt::execute(), and mysqli_stmt::get_result().
The statement template can contain zero or more question mark
(?) parameter markers—also called placeholders.
The parameter values must be provided as an array using
params parameter.
A prepared statement is created under the hood but it's never exposed outside of the function. It's impossible to access properties of the statement as one would do with the mysqli_stmt object. Due to this limitation, the status information is copied to the mysqli object and is available using its methods, e.g. mysqli_affected_rows() or mysqli_error().
注意:
In the case where a statement is passed to mysqli_execute_query() that is longer than
max_allowed_packetof the server, the returned error codes are different depending on the operating system. The behavior is as follows:
On Linux returns an error code of 1153. The error message means
got a packet bigger than.max_allowed_packetbytesOn Windows returns an error code 2006. This error message means
server has gone away.
mysql
仅以过程化样式：由mysqli_connect() 或 mysqli_init() 返回的 mysqli 对象。
query
The query, as a string. It must consist of a single SQL statement.
The SQL statement may contain zero or more parameter markers
represented by question mark (?) characters
at the appropriate positions.
注意:
The markers are legal only in certain places in SQL statements. For example, they are permitted in the
VALUES()list of anINSERTstatement (to specify column values for a row), or in a comparison with a column in aWHEREclause to specify a comparison value. However, they are not permitted for identifiers (such as table or column names).
params
An optional list array with as many elements as there are bound parameters in the SQL statement being executed. Each value is treated as a string.
Returns false on failure. For successful queries which produce a result
set, such as SELECT, SHOW, DESCRIBE or
EXPLAIN, returns
a mysqli_result object. For other successful queries,
returns true.
示例 #1 mysqli::execute_query() example
面向对象风格
<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli('localhost', 'my_user', 'my_password', 'world');
$query = 'SELECT Name, District FROM City WHERE CountryCode=? ORDER BY Name LIMIT 5';
$result = $mysqli->execute_query($query, ['DEU']);
foreach ($result as $row) {
printf("%s (%s)\n", $row["Name"], $row["District"]);
}
过程化风格
<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
$query = 'SELECT Name, District FROM City WHERE CountryCode=? ORDER BY Name LIMIT 5';
$result = mysqli_execute_query($link, $query, ['DEU']);
foreach ($result as $row) {
printf("%s (%s)\n", $row["Name"], $row["District"]);
}
以上例程的输出类似于：
Aachen (Nordrhein-Westfalen) Augsburg (Baijeri) Bergisch Gladbach (Nordrhein-Westfalen) Berlin (Berliini) Bielefeld (Nordrhein-Westfalen)
