PHP While Loop Condition
php while condition is run user defined times run the process.
(warning:the condition is error to browser display the infinite times)
PHP while loop can be used to traverse set of code like for loop.
It should be used if number of iteration is not known.
Syntax
Alternative Syntax
PHP While Loop Flowchart
PHP While Loop Example
Output:
1 2 3 4 5 6 7 8 9 10
Alternative Example
Output:
1 2 3 4 5 6 7 8 9 10
PHP Nested While Loop
We can use while loop inside another while loop in PHP, it is known as nested while loop.
In case of inner or nested while loop, nested while loop is executed fully for one outer while loop. If outer while loop is to be executed for 3 times and nested while loop for 3 times, nested while loop will be executed 9 times (3 times for 1st outer loop, 3 times for 2nd outer loop and 3 times for 3rd outer loop).
Example
Output:
1 1 1 2 1 3 2 1 2 2 2 3 3 1 3 2 3 3