- PHP Tutorial
- PHP Syntax
- PHP Variables
- PHP Data Types
- PHP Constants
- PHP Operators
- PHP if elseif else statements
- PHP Switch Statement
- Arrays in PHP
- Loops in PHP
- Strings in PHP
- GET and POST in PHP
- Functions in PHP
- Cookies in PHP
- Sessions in PHP
- Include and Require in PHP
- File Opening and Reading in PHP
- File Creation and Writing in PHP
- Form Validation in PHP
- Date and Time Functions in PHP
- Validation and Sanitizing Data Via PHP Filters
- Introduction to Object Oriented Programming in PHP
- Parameterized Constructors in PHP
- Inheritance in Object Oriented PHP
- Abstract Class in PHP
- Math Functions in PHP
- Error and Exception Handling in PHP
- Reading XML data in PHP
- Reading XML Nodes/Attributes Values in PHP
- XML DOM Parser
- Sorting Arrays in PHP
- Commonly Used Array Functions in PHP
- Commonly Used String Functions in PHP
- Access Modifiers in PHP
- Variable Examination Functions in PHP
- File Upload in PHP
- PHP and AJAX
- PHP Frameworks
- Connecting PHP to MySQL
- Create Database in MySQL via PHP Script
- Drop Database in MySQL via PHP Script
- Selecting Mysql Database via PHP Script
- Create Table in MySQL via PHP Script
- Drop Table in MySQL
- Inserting Data in MySQL Table via PHP Script
- Selecting MySQL Table Data via PHP Script
- Where Clause in MySQL
- Update MySQL Table data via PHP Script
- Deleting Data From MySQL Table via PHP Script
- Sorting MySQL table data via PHP Script
- LIKE Query in MySQL
- Select Unique Data via Distinct In MySQL
- IN Operator in MySQL
- Using BETWEEN operator in MySQL
- AND/OR Operators In MySQL
- Selecting Limited records via LIMIT in MySQL
- Max and Min Functions in MySQL
- SUM and AVG Functions in MySQL
- Using COUNT Function in MySQL
- UCASE and LCASE Functions in MySQL
- GROUP BY and HAVING Clauses in MySQL
- INSERT INTO SELECT in MySQL
- DEFAULT Statement in MySQL
- Implementing Check on Table Columns
- INNER JOIN in MySQL
- LEFT JOIN in MySQL
- RIGHT JOIN In MySQL
- Implementing FULL Join in MySQL
PHP if elseif else statements
Very often, while writing the code, some decisions are required to perform certain actions. In PHP, you can use following decision making statements for the same.
- if statement
- if else statement
- if elseif else statement
- switch statement
The if statement
It executes the code for specific one condition.
Syntax
if (condition) {
// Block of code; // Executed only if condition is true
}
Example
<?php
$KH_CurrentDate = date('d-m-Y');
$KH_CurrentDay = date("D", strtotime($KH_CurrentDate));
if ($KH_CurrentDay == "sun")
echo "Today is a holiday";
if ($KH_CurrentDay != "sun")
echo "Today is not a holiday";
?>Download the code Run the code
The if…else statement
It executes some set of statements if condition is true. Otherwise, execute another set of code if condition is false.
Syntax
if (condition) {
Block of code; // Executes only if condition is true
} else {
Block of code; // Executes only if condition is false
}
Example
<?php
$KH_CurrentDate = date('d-m-Y');
$KH_CurrentDay = date("D", strtotime($KH_CurrentDate));
if ($KH_CurrentDay == "sun")
echo "Today is a holiday";
else
echo "Today is a working day";
?>Download the code Run the code
The if elseif else statement
It executes different set of statements depending on the conditions.
Syntax
if (condition) {
Block of code; // Executes only if condition is true
} elseif (condition) {
Block of code; // Executes only if above condition is false and this condition is true
} else {
Block of code; // Executes only if all above condition are false
}
Example
<?php
$KH_CurrentDate = date('d-m-Y');
$KH_CurrentDay = date("D", strtotime($KH_CurrentDate));
if ($KH_CurrentDay == "sun")
echo "Today is a holiday";
elseif ($KH_CurrentDay == "sat")
echo "Today is a half working day";
else
echo "Today is a working day";
?>Download the code Run the code
We will discuss the Switch statement in the next chapter.