The do…while statement will execute a block of code at least once – it then will repeat the loop as long as a condition is true.

Syntax

do {
    code to be executed;
} 
while (condition is true);

The example below first sets a variable $x to 1 ($x = 1). Then, the do while loop will write some output, and then increment the variable $x with 1. Then the condition is checked (is $x less than, or equal to 5?), and the loop will continue to run as long as $x is less than, or equal to 5

<?php
$x = 1;
do {
    echo "The number is: $x <br>";
    $x++;
} while ($x <= 5);
?>

In the below example will increment the value of i at least once, and it will continue incrementing the variable i as long as it has a value of less than 10

<?php
  $i = 0;
  $num = 0;
     
  do {
      $i++;
  }
      
  while( $i < 10 );
  echo ("Loop stopped at i = $i" );
?>

Example Program to display table of given number

<?php
$tab=10;
$i=1;
do
 {
$t=$tab*$i;
echo $t." ";
$i++;
}
while ($i<=10); 
?>