Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial, we are going to be discussing about the built-in PHP mysqli_stmt_prepare() Function.
The built-in PHP mysqli_stmt_prepare() function prepares an SQL statement for execution, you can make use of parameter markers ("?") in this query, specify values for them, and execute it later.
The built-in PHP mysqli_stmt_prepare() function prepares an SQL statement for execution, you can make use of parameter markers ("?") in this query, specify values for them, and execute it later.
Syntax
Following below is the syntax to use this function -
mysqli_stmt_prepare($stmt, $str);
Parameter Details
Sr.No | Parameter & Description |
---|---|
1 | stmt(Mandatory) This is an object representing a statement (returned by the mysqli_stmt_init() function). |
2 | str(Mandatory) This is string value specifying the required query. |
Return Value
This built-in PHP function returns TRUE on success and FALSE on failure.
PHP Version
This built-in PHP function was first introduced in PHP version 5 and works in all the later versions.
Example1
The following below is an example which demonstrates the usage of the built-in PHP mysqli_stmt_prepare() function (in a procedural style) -
<?php $con = mysqli_connect("localhost", "root", "password", "mydb"); $query = "CREATE TABLE Test(Name VARCHAR(255), AGE INT)"; mysqli_query($con, $query); print("Table Created.....\n"); //Initializing the statement $stmt = mysqli_stmt_init($con); mysqli_stmt_prepare($stmt, "INSERT INTO Test values(?, ?)"); mysqli_stmt_bind_param($stmt, "si", $Name, $Age); $Name = 'Kennedy'; $Age = 27; print("Record Inserted....."); //Executing the statement mysqli_stmt_execute($stmt); //Closing the statement mysqli_stmt_close($stmt); //Closing the connection mysqli_close($con); ?>
Output
When the above code is executed, it will produce the following result -
Table Created..... Records Inserted.....
Example2
In an object oriented style the syntax of this function is $stmt->prepare(); Following is the example of this function in an object oriented style $minus;
<?php $con = new mysqli("localhost", "root", "password", "mydb"); $query = "CREATE TABLE Test(Name VARCHAR(255), AGE INT)"; $con->query($query); print("Table Created.....\n"); //Initializing the statement $stmt = $con->stmt_init(); $stmt->prepare("INSERT INTO Test values(?, ?)"); $stmt->bind_param("si", $Name, $Age); $Name = 'Kennedy'; $Age = 27; print("Record Inserted....."); //Executing the statement $stmt->execute(); //Closing the statement $stmt->close(); //Closing the connection $con->close(); ?>
Output
When the above code is executed, it will produce the following result -
Table Created..... Record Inserted.....
Example3
Following below is another example of this built-in function using the SELECT query (in an object oriented style) -
<?php //Creating a connection $con = new mysqli("localhost", "root", "password", "mydb"); $con -> query("CREATE TABLE myplayers(ID INT, First_Name VARCHAR(255), Last_Name VARCHAR(255), Place_Of_Birth VARCHAR(255), Country VARCHAR(255))"); print("Table Created.....\n"); $con -> query("INSERT INTO myplayers values(1, 'Kennedy', 'Nkpara', 'PortHarcourt', 'Nigeria')"); $con -> query("INSERT INTO myplayers values(2, 'Jonathan', 'Trott', 'CapeTown', 'SouthAfrica')"); $con -> query("INSERT INTO myplayers values(3, 'Queen', 'Douglas', 'Texas', 'UnitedStates')"); $con -> query("INSERT INTO myplayers values(4, 'Paul', 'Francis', 'Texas', 'UnitedStates')"); print("Records Inserted.....\n"); //Initiating the statement object $stmt = $con->stmt_init(); $stmt -> prepare("SELECT * FROM myplayers WHERE country=?"); $stmt -> bind_param("s", $country); $country = "Nigeria"; //Executing the statement $stmt->execute(); //Closing the statement $stmt->close(); //Closing the connection $con->close(); ?>
Output
When the above code is executed, it will produce the following result below -
Table Created..... Records Inserted.....
Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the mysqli_stmt_reset() Function in PHP.
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