PHP – Mysql LIKE Operator
Problem Statement :
In this article, we are going to display data using LIKE operator with SQL in Xampp server.
Here we are going to consider the student address database as an example.
Requirements:
Xampp
Introduction:
PHP stands for hypertext preprocessor. It is used as a server-side scripting language and can be used to connect with MySQL server with xampp tool.
MySQL is a query language for managing databases.
- LIKE OPERATOR
The LIKE operator in SQL is used in a WHERE clause to search for a specified pattern in a column.
There are two wildcards that can be used in conjunction with the LIKE operator. They are:
- The percent sign (%) which represents zero, one, or multiple characters
- The underscore sign (_) represents one, single character.
Syntax:
SELECT column1, column2, ...,columnn FROM table_name WHERE columnn LIKE pattern;
Description
- letter% = gives the result starts with the given letter
Example:
Consider the following table:
Query:
Address starts with h:
SELECT * from student_address WHERE saddress LIKE 'h%'
Output:
Address starts with h: STUDENT-ID : 3 ----- NAME : ojaswi ----- ADDRESS : hyderabad STUDENT-ID : 4 ----- NAME : rohith ----- ADDRESS : hyderabad STUDENT-ID : 5 ----- NAME : gnanesh ----- ADDRESS : hyderabad
Query:
Name ends with h:
SELECT * from student_address WHERE sname LIKE '%h';
Output:
Name ends with h: STUDENT-ID : 4 ----- NAME : rohith ----- ADDRESS : hyderabad STUDENT-ID : 5 ----- NAME : gnanesh ----- ADDRESS : hyderabad
Query:
Address contains “um” pattern
SELECT * from student_address WHERE sname LIKE '%um%';
Output:
STUDENT-ID : 1 ----- NAME : sravan kumar ----- ADDRESS : kakumanu
Query:
Address starts with r and ends with h.
SELECT * from student_address WHERE sname LIKE 'r%h';
Output:
STUDENT-ID : 4 ----- NAME : rohith ----- ADDRESS : hyderabad.
Approach:
- Create database(named database) and create table named student_address
- Insert data into the table using PHP
- Write PHP code to perform like operation
- Observe the results
Steps:
- Start xampp server.
- Create database named database and create a table named student_address
- Write PHP code to insert records into it. (data1.php)
PHP
<?php //servername $servername = "localhost"; //username $username = "root"; //empty password $password = ""; //database is the database name $dbname = "database"; // Create connection by passing these connection parameters $conn = new mysqli($servername, $username, $password, $dbname); // Check this connection if ($conn->connect_error) { die("Connection failed: " . $conn->connect_error); } //insert records into table $sql = "INSERT INTO student_address VALUES (1,'sravan kumar','kakumanu');"; $sql .= "INSERT INTO student_address VALUES (2,'bobby','kakumanu');"; $sql .= "INSERT INTO student_address VALUES (3,'ojaswi','hyderabad');"; $sql .= "INSERT INTO student_address VALUES (4,'rohith','hyderabad');"; $sql .= "INSERT INTO student_address VALUES (5,'gnanesh','hyderabad');"; if ($conn->multi_query($sql) === TRUE) { echo "data stored successfully"; } else { echo "Error: " . $sql . "<br>" . $conn->error; } $conn->close(); ?> |
open browser and type “localhost.data1.php” to execute it.
Output:
data stored successfully
- PHP code demo for like operator for a letter starts with :
form.php
PHP
<html> <body> <?php //servername $servername = "localhost"; //username $username = "root"; //empty password $password = ""; //database is the database name $dbname = "database"; // Create connection by passing these connection parameters $conn = new mysqli($servername, $username, $password, $dbname); echo "<h1>"; echo "Like operator demo: "; echo"</h1>"; echo "<br>"; echo "address starts with h:"; echo "<br>"; echo "<br>"; //sql query $sql = "SELECT * from student_address WHERE saddress LIKE 'h%'"; $result = $conn->query($sql); //display data on web page while($row = mysqli_fetch_array($result)){ echo " STUDENT-ID : ". $row['sid'], " ----- NAME : ". $row['sname'] ," ----- ADDRESS : ". $row['saddress'] ; echo "<br>"; } echo "<br>"; echo "name starts with s "; echo "<br>"; echo "<br>"; //sql query $sql1 = "SELECT * from student_address WHERE sname LIKE 's%'"; $result1 = $conn->query($sql1); //display data on web page while($row = mysqli_fetch_array($result1)){ echo " STUDENT-ID : ". $row['sid'], " ----- NAME : ". $row['sname'] ," ----- ADDRESS : ". $row['saddress'] ; echo "<br>"; } //close the connection $conn->close(); ?> </body> </html> |
Output:
localhost/form.php
- PHP code demo for a letter ends with :
form1.php
PHP
<html> <body> <?php //servername $servername = "localhost"; //username $username = "root"; //empty password $password = ""; //database is the database name $dbname = "database"; // Create connection by passing these connection parameters $conn = new mysqli($servername, $username, $password, $dbname); echo "<h1>"; echo "Like operator demo: "; echo"</h1>"; echo "<br>"; echo "name ends with h:"; echo "<br>"; echo "<br>"; //sql query $sql = "SELECT * from student_address WHERE sname LIKE '%h'"; $result = $conn->query($sql); //display data on web page while($row = mysqli_fetch_array($result)){ echo " STUDENT-ID : ". $row['sid'], " ----- NAME : ". $row['sname'] ," ----- ADDRESS : ". $row['saddress'] ; echo "<br>"; } echo "<br>"; echo "address ends with u "; echo "<br>"; echo "<br>"; //sql query $sql1 = "SELECT * from student_address WHERE saddress LIKE '%u'"; $result1 = $conn->query($sql1); //display data on web page while($row = mysqli_fetch_array($result1)){ echo " STUDENT-ID : ". $row['sid'], " ----- NAME : ". $row['sname'] ," ----- ADDRESS : ". $row['saddress'] ; echo "<br>"; } //close the connection $conn->close(); ?> </body> </html> |
Output:
- PHP code demo for a substring match and letter starts with-ends with
form2.php
PHP
<html> <body> <?php //servername $servername = "localhost"; //username $username = "root"; //empty password $password = ""; //database is the database name $dbname = "database"; // Create connection by passing these connection parameters $conn = new mysqli($servername, $username, $password, $dbname); echo "<h1>"; echo "Like operator demo: "; echo"</h1>"; echo "<br>"; echo "address contains um:"; echo "<br>"; echo "<br>"; //sql query $sql = "SELECT * from student_address WHERE sname LIKE '%um%'"; $result = $conn->query($sql); //display data on web page while($row = mysqli_fetch_array($result)){ echo " STUDENT-ID : ". $row['sid'], " ----- NAME : ". $row['sname'] ," ----- ADDRESS : ". $row['saddress'] ; echo "<br>"; } echo "<br>"; echo "name starts with r and ends with h "; echo "<br>"; echo "<br>"; //sql query $sql1 = "SELECT * from student_address WHERE sname LIKE 'r%h'"; $result1 = $conn->query($sql1); //display data on web page while($row = mysqli_fetch_array($result1)){ echo " STUDENT-ID : ". $row['sid'], " ----- NAME : ". $row['sname'] ," ----- ADDRESS : ". $row['saddress'] ; echo "<br>"; } //close the connection $conn->close(); ?> </body> </html> |
Output:
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