English | 简体中文 | 繁體中文 | Русский язык | Français | Español | Português | Deutsch | 日本語 | 한국어 | Italiano | بالعربية
The mysqli_stmt_result_metadata() function returns the result set metadata from the prepared statement.
mysqli_stmt_result_metadata()The function accepts a prepared statement object as a parameter, and if the given statement executes a SELECT query (or any other query that returns a result set), it (this function) returns a metadata object that contains information about the result set of the given statement.
mysqli_stmt_result_metadata($stmt);
Serial Number | Parameters and Description |
---|---|
1 | con(Required) This is the object representing the prepared statement. |
The PHP mysqli_stmt_result_metadata() function returns a metadata object on success, and returnsfalse.
This function was originally introduced in PHP version5introduced and can be used in all higher versions.
The following examples demonstratemysqli_stmt_result_metadata()Usage of Function (Procedural Style)-
<?php $con = mysqli_connect("localhost", "root", "password", "mydb"); mysqli_query($con, "CREATE TABLE test(Name VARCHAR(255), age INT); mysqli_query($con, "INSERT INTO test values('Raju', 25); mysqli_query($con, "INSERT INTO test values('Jonathan', 30)); print("Creating table.....\n"); //Retrieve the content of the table $stmt = mysqli_prepare($con, "SELECT * FROM test); //Execute statement mysqli_stmt_execute($stmt); //Retrieve result set metadata $metadata = mysqli_stmt_result_metadata($stmt); print_r(mysqli_fetch_fields($metadata)); mysqli_free_result($metadata); //Close connection mysqli_close($con); ?>
Output result
Creating table..... Array ( [0] => stdClass Object ( [name] => Name [orgname] => Name [table] => test [orgtable] => test [def] => [db] => mydb [catalog] => def [max_length] => 0 [length] => 765 [charsetnr] => 33 [flags] => 0 [type] => 253 [decimals] => 0 ) [1] => stdClass Object ( [name] => AGE [orgname] => AGE [table] => test [orgtable] => test [def] => [db] => mydb [catalog] => def [max_length] => 0 [length] => 11 [charsetnr] => 63 [flags] => 32768 [type] => 3 [decimals] => 0 ) )
In object-oriented style, the syntax of this function is$stmt-> result_metadata();。Here is an example of this function in an object-oriented style;
<?php //Establish connection $con = new mysqli("localhost", "root", "password", "mydb"); $con -> query("CREATE TABLE Test(Name VARCHAR(255), AGE INT)"); $con -> query("insert into Test values('Raju', 25),('Rahman', 30),('Sarmista', 27); print("Creating table.....\n"); $stmt = $con -> prepare( "SELECT * FROM Test WHERE Name in(?, ?)"); $stmt -> bind_param("ss", $name1, $name2); $name1 = 'Raju'; $name2 = 'Rahman'; print("Inserting record.....\n"); //Execute statement $stmt->execute(); //Retrieve result set metadata $metadata = $stmt->result_metadata(); $field = $metadata->fetch_field(); print("Field Name: "+$field->name); //End statement $stmt->close(); //Close connection $con->close(); ?>
Output result
Creating table..... Inserting record..... Field Name: Name