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In Php, we have the following loops.
PHP while Loops:-
While loop executes the block of code as long as the condition is true. If it found the false then it break the execution.
Syntax:
<?php
while (condition is true) {
code to be executed;
}
?>
Example:-
<?php
$x = 2;
while($x <= 8) {
echo "The number is: $x <br>";
$x++;
}
?>
Output:-
The number is: 2
The number is: 3
The number is: 4
The number is: 5
The number is: 6
The number is: 7
The number is: 8
The PHP do...while Loop:-
The do..while loop executes once in every case. After excute once it checks the conditions and work just like simple while loop.
Syntax:
do {
code to be executed;
} while (condition is true);
Example:-
<?php
$x = 12;
do {
echo "The number is: $x <br>";
$x++;
} while ($x <= 8);
?>
Output:
The number is: 2
The number is: 3
The number is: 4
The number is: 5
The number is: 6
The number is: 7
The number is: 8
PHP for Loops:-
PHP for loops execute a block of code a given number of times.
The for loop is used when you have how many times you want to execute any code.
Syntax:-
for (init counter; condition; increment counter) {
code to be executed;
}
Parameters:
init counter: Initialize the loop counter value
conditon: Evaluated for each loop iteration. If it is TRUE, the loop continues. If it is FALSE, the loop ends.
increment counter: Increases the loop counter value
Example:-
<?php
for ($x = 1; $x <= 5; $x++) {
echo "The number is: $x <br>";
}
?>
Output:
The number is: 1
The number is: 2
The number is: 3
The number is: 4
The number is: 5
The PHP foreach Loop:-
The foreach loop works similar to the for loop. It is only works for array. It is used to getting the key values from an array.
Syntax:
foreach ($array as $key=>$value) {
code to be executed;
}
Example:-
<?php
$colors = array("apple", "banana", "cherry", "mango");
foreach ($colors as $value) {
echo "$value <br>";
}
?>
Output:
apple
banana
cherry
mango