- PHP Basics
- PHP Home
- PHP Environment Setup
- PHP Getting Started
- PHP Basic Syntax
- PHP echo
- PHP print
- PHP echo Vs print
- PHP Comments
- PHP Data Types
- PHP Variables
- PHP Variable Scope
- PHP gettype()
- PHP Constants
- PHP Operators
- PHP Program Control
- PHP Decision Making
- PHP if-elseif-else
- PHP switch
- PHP Loops
- PHP for Loop
- PHP while Loop
- PHP do-while Loop
- PHP foreach Loop
- PHP break & continue
- PHP Popular Topics
- PHP Arrays
- PHP print_r()
- PHP Strings
- PHP Functions
- PHP References
- PHP Object Oriented
- PHP Object Oriented
- PHP Classes & Objects
- PHP Member Variable
- PHP Member Function
- PHP Encapsulation
- PHP Data Abstraction
- PHP Inheritance
- PHP Constructor Destructor
- PHP Polymorphism
- PHP Web Developments
- PHP Web Developments
- PHP GET & POST
- PHP Read Requested Data
- PHP File Handling (I/O)
- PHP File Handling (I/O)
- PHP fopen() | Open File
- PHP Create a File
- PHP fwrite() | Write to File
- PHP fread() | Read File
- PHP feof()
- PHP fgetc()
- PHP fgets()
- PHP fclose() | Close File
- PHP unlink() | Delete File
- PHP Append to File
- PHP copy() | Copy File
- PHP file_get_contents()
- PHP file_put_contents()
- PHP file_exists()
- PHP filesize()
- PHP rename() | Rename File
- PHP fseek()
- PHP ftell()
- PHP rewind()
- PHP disk_free_space()
- PHP disk_total_space()
- PHP mkdir() | Create Directory
- PHP rmdir() | Remove Directory
- PHP glob() | Get Files/Directories
- PHP basename() | Get filename
- PHP dirname() | Get Path
- PHP filemtime()
- PHP file()
- PHP Advanced
- PHP Cookies
- PHP Sessions
- PHP Send Emails
- PHP Serialization
- PHP Namespaces
- PHP File Upload
- PHP Date and Time
- PHP Image Processing
- PHP Regular Expression
- PHP Predefined Variables
- PHP Error Handling
- PHP Debugging
- PHP and MySQLi Tutorial
- PHP and MySQLi Home
- PHP MySQLi Setup
- PHP MySQLi Create DB
- PHP MySQLi Create Table
- PHP MySQLi Connect to DB
- PHP MySQLi Insert Record
- PHP MySQLi Fetch Record
- PHP MySQLi Update Record
- PHP MySQLi Delete Record
- PHP MySQLi SignUp Page
- PHP MySQLi LogIn Page
- PHP MySQLi Store User Data
- PHP MySQLi Close Connection
- PHP connect_errno
- PHP connect_error
- PHP query()
- PHP fetch_row()
- PHP fetch_assoc()
- PHP fetch_array()
- PHP free_result()
- PHP error
- PHP prepare()
- PHP bind_param()
- PHP execute()
- PHP fetch()
- PHP store_result()
- PHP num_rows
- PHP bind_result()
- PHP get_result()
- PHP mysqli_result Class
- PHP Error Constants
- PHP mysqli_driver()
- PHP Misc
- PHP error_reporting()
- PHP Escape Special Characters
- PHP htmlspecialchars()
- PHP new
- PHP header()
- PHP getallheaders()
- PHP empty()
- PHP isset()
- PHP unset()
- PHP exit()
- PHP exit Vs break
- PHP include()
- PHP require()
- PHP include() Vs require()
- PHP AJAX & XML
- PHP AJAX
- PHP XML
- PHP File Handling Functions
- PHP abs()
- PHP Test
- PHP Online Test
- Give Online Test
- All Test List
PHP MySQLi Fetch Data from Database
This article is created to describe the ways to fetch and display the data from the MySQL database.
Here are the list of functions that can be used to fetch data from MySQL database, using PHP MySQLi script:
- fetch_row() is used to to fetch and return the result as an enumerated array, in object-oriented style
- mysqli_fetch_row() is used to to fetch and return the result as an enumerated array, in procedural style
- fetch_assoc() is used to fetch and return the result as an associative array, in object-oriented style
- mysqli_fetch_assoc() is used to fetch and return the result as an associative array, in procedural style
- fetch_array() is used, when we need to fetch and get the result as an enumerated array or as an associative array, or as both, in object-oriented style
- mysqli_fetch_array() is used, when we need to fetch and get the result as an enumerated array or as an associative array, or as both, in procedural style
Note - The fetch_row(), fetch_assoc(), and fetch_array() are used in PHP MySQLi object-oriented script.
Note - The mysqli_fetch_row(), mysqli_fetch_assoc(), and mysqli_fetch_array() are used in PHP MySQLi procedural script.
PHP MySQLi Script to Fetch Data using fetch_row()
<?php $server = "localhost"; $user = "root"; $pass = ""; $db = "codescracker"; $conn = new mysqli($server, $user, $pass, $db); if($conn -> connect_errno) { echo "Connection to the database failed!<BR>"; echo "Reason: ", $conn -> connect_error; exit(); } $sql = "SELECT * FROM customer"; $result = $conn -> query($sql); if($result) { while($row = $result -> fetch_row()) { echo "Name: ", $row[1]; echo "<BR>"; echo "Age: ", $row[2]; echo "<HR>"; } $result -> free_result(); } else { echo "Something went wrong!<BR>"; echo "Error Description: ", $conn -> error; } $conn -> close(); ?>
The output produced by above PHP example, on fetching data from database is shown in the snapshot given below:
In above example, since the name field is available at second column, therefore I have used 1 as index to get that column. In array, indexing starts with 0, therefore 1 refers to the second column.
Note - The mysqli() is used to open a connection to the MySQL database server, in object-oriented style.
Note - The new keyword is used to create a new object.
Note - The connect_errno is used to get/return the error code (if any) from last connect call, in object-oriented style.
Note - The connect_error is used to get the error description (if any) from last connection, in object-oriented style.
Note - The exit() is used to terminate the execution of the current PHP script.
Note - The query() is used to perform query on the MySQL database, in object-oriented style.
Note - The free_result() is used to free the stored result, in object-oriented style.
Note - The error is used to return the description of error (if any), by the most recent function call, in object-oriented style.
Note - The close() is used to close an opened connection, in object-oriented style.
The above example, can also be written as:
<?php $conn = new mysqli("localhost", "root", "", "codescracker"); if(!$conn -> connect_errno) { $sql = "SELECT * FROM customer"; if($result = $conn -> query($sql)) { while($row = $result -> fetch_row()) { echo "Name: ", $row[1]; echo "<BR>"; echo "Age: ", $row[2]; echo "<HR>"; } $result -> free_result(); } } $conn -> close(); ?>
PHP MySQLi Script to Fetch Data using mysqli_fetch_row()
<?php $conn = mysqli_connect("localhost", "root", "", "codescracker"); if(!mysqli_connect_errno()) { $sql = "SELECT * FROM customer"; if($result = mysqli_query($conn, $sql)) { while($row = mysqli_fetch_row($result)) { echo "Name: ", $row[1]; echo "<BR>"; echo "Age: ", $row[2]; echo "<HR>"; } mysqli_free_result($result); } } mysqli_close($conn); ?>
Note - The mysqli_connect() is used to open a connection to the MySQL database server, in procedural style.
Note - The mysqli_connect_errno() is used to get/return the error code (if any) from last connect call, in procedural style.
Note - The mysqli_query() is used to perform query on the MySQL database, in procedural style.
Note - The mysqli_free_result() is used to free the stored result, in procedural style.
Note - The mysqli_close() is used to close an opened connection to the MySQL database, in procedural style.
PHP MySQLi Script to Fetch Data using fetch_assoc()
<?php $conn = new mysqli("localhost", "root", "", "codescracker"); if(!$conn -> connect_errno) { $sql = "SELECT * FROM customer"; if($result = $conn -> query($sql)) { while($row = $result -> fetch_assoc()) { echo "Name: ", $row['name']; echo "<BR>"; echo "Age: ", $row['age']; echo "<HR>"; } $result -> free_result(); } } $conn -> close(); ?>
PHP MySQLi Script to Fetch Data using mysqli_fetch_assoc()
<?php $conn = mysqli_connect("localhost", "root", "", "codescracker"); if(!mysqli_connect_errno()) { $sql = "SELECT * FROM customer"; if($result = mysqli_query($conn, $sql)) { while($row = mysqli_fetch_assoc($result)) { echo "Name: ", $row['name']; echo "<BR>"; echo "Age: ", $row['age']; echo "<HR>"; } mysqli_free_result($result); } } mysqli_close($conn); ?>
PHP MySQLi Script to Fetch Data using fetch_array()
<?php $conn = new mysqli("localhost", "root", "", "codescracker"); if(!$conn -> connect_errno) { $sql = "SELECT * FROM customer"; if($result = $conn -> query($sql)) { while($row = $result -> fetch_array()) { echo "Name: ", $row['name']; echo "<BR>"; echo "Age: ", $row[2]; echo "<HR>"; } $result -> free_result(); } } $conn -> close(); ?>
As an instructor, my job is to give the best advice. So what I want to suggest is, use either fetch_array() (if working with PHP MySQLi object-oriented) or mysqli_fetch_array() (if working with PHP MySQLi procedural), so that you can access the fields, using both name and number.
PHP MySQLi Script to Fetch Data using mysqli_fetch_array()
<?php $conn = mysqli_connect("localhost", "root", "", "codescracker"); if(!mysqli_connect_errno()) { $sql = "SELECT * FROM customer"; if($result = mysqli_query($conn, $sql)) { while($row = mysqli_fetch_array($result)) { echo "Name: ", $row[1]; echo "<BR>"; echo "Age: ", $row['age']; echo "<HR>"; } mysqli_free_result($result); } } mysqli_close($conn); ?>
All the above examples of fetching data from the MySQL database, does the same job.
PHP MySQLi Fetch Data and Display in Table
You can also wrap the output into an HTML table, to display the data, looks impressive and more readable. Let me create another PHP MySQLi script to fetch data using any fetching function say fetch_array(), to display the data in the form of table, this time:
<?php $driver = new mysqli_driver(); $driver -> report_mode = MYSQLI_REPORT_OFF; $server = "localhost"; $user = "root"; $pass = ""; $db = "codescracker"; $conn = @new mysqli($server, $user, $pass, $db); if($conn -> connect_errno) { echo "Connection to the database failed!<BR>"; echo "Reason: ", $conn -> connect_error; exit(); } $sql = "SELECT name, email FROM customer"; $result = $conn -> query($sql); if($result) { echo "<TABLE>"; echo "<TR>"; echo "<TH>Name</TH>"; echo "<TH>Email</TH>"; echo "</TR>"; while($row = $result -> fetch_array()) { echo "<TR>"; echo "<TD>$row[0]</TD>"; echo "<TD>$row[1]</TD>"; echo "</TR>"; } echo "</TABLE>"; $result -> free_result(); } else { echo "Something went wrong!<BR>"; echo "Error Description: ", $conn -> error; } $conn -> close(); ?>
Now the output should be:
Note - The mysqli_driver() is used to modify the error reporting mode, in object-oriented style.
The first two statements in above example, are used to hide the default error. For example, if I use the wrong column name say FullName in place of name, while fetching the data, then the output looks like:
Data has not been inserted! Reason: Unknown column 'FullName' in 'field list'
Note - The @ before new is used to suppress the error (if any), while creating an object of the class mysqli.
If you want to style more, then you can wrap the PHP script in HTML, in this way:
<HTML> <HEAD> <STYLE> table{width: 100%;} th, td{padding: 12px;} th{text-align: left; background-color: antiquewhite;} tr:nth-child(even){background-color: aliceblue;} </STYLE> </HEAD> <BODY> <?php // PHP script goes here ?> </BODY> </HTML>
Now the output should be:
Note - Since, this article is not about CSS, therefore I will not go in detail. But if you want, refer to its separate tutorial.
« Previous Tutorial Next Tutorial »
Follow/Like Us on Facebook
Subscribe Us on YouTube