WordPress开发手册:maybe_create_table()

函数原型

maybe_create_table( string $table_name, string $create_ddl ): bool

函数描述

是否弃用

未弃用

函数参数

$table_name
string
Required

Database table name.

$create_ddl
string
Required

SQL statement to create table.

函数返回值

函数位置

函数源码

function maybe_create_table( $table_name, $create_ddl ) {
	global $wpdb;

	$query = $wpdb->prepare( 'SHOW TABLES LIKE %s', $wpdb->esc_like( $table_name ) );

	if ( $wpdb->get_var( $query ) === $table_name ) {
		return true;
	}

	// Didn't find it, so try to create it.
	$wpdb->query( $create_ddl );

	// We cannot directly tell that whether this succeeded!
	if ( $wpdb->get_var( $query ) === $table_name ) {
		return true;
	}

	return false;
}

源码链接

WordPress
Github

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