Explain looping in php
Looping in PHP is a fundamental concept that allows you to execute a block of code repeatedly based on a specific condition. PHP provides several loop structures to accommodate different looping scenarios:
1. `for` loop
- The `for` loop is used when you know the exact number of iterations you want to perform. - It consists of three parts: initialization, condition, and increment/decrement.
- The loop initializes a counter variable, checks the condition before each iteration, and increments or decrements the counter at the end of each iteration.
Example:
```php for ($i = 1; $i <= 10; $i++) { echo $i . ' '; }
``` Output: ``` 1 2 3 4 5 6 7 8 9 10 ```
2. `while` loop: -
The `while` loop is used when you want to repeat a block of code as long as a specific condition is true. - It checks the condition before each iteration and continues executing the code block as long as the condition remains true
. Example: ```php $i = 1;
while ($i <= 10)
{
3 do-while` loop: - The `do-while` loop is similar to the `while` loop, but it checks the condition at the end of each iteration. - This means the code block is executed at least once before the condition is evaluated.
Example: ```php $i = 1;
do { echo $i . ' '; $i++;
} while ($i <= 10);
``` Output: ``` 1 2 3 4 5 6 7 8 9 10
``` 4. `foreach` loop: - The `foreach` loop is specifically designed for iterating over arrays or objects. - It automatically traverses each element in the array or object, assigning the current element's value to a variable for further processing.
Example with an array: ```php $fruits = ['apple', 'banana', 'orange'];
foreach ($fruits as $fruit)
{ echo $fruit . ' '; } ```
Output: ``` apple banana orange ```
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