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The while loop executes a block of code while a condition is true. $i=0; while($i < 3) { echo "Your number is: " .$i. " "; $i++; } ?> In this code, while the variable $i is less than 3 the while loop shall run, and the output shall be: Your number is 0 Your number is 1 Your number is 2 Your number is 3 The for loop is used when you know how many times your script should run. for($i=0; $i<=5; $i++) { echo "Your number is: " .$i. " "; $i++; } ?> This example defines a loop with the variable $i=0. The loop shall continue to run as long as $i is less than or equal to 5. Output: Your number is 0 Your number is 1 Your number is 2 Your number is 3 Your number is 4 Your number is 5 Sources: w3schools.com
