<?php for ($i = 0; $i < 31; $i++) { if ($i%5 == 1 || $i%5 == 2 || $i%5 == 3 ) { echo "<strong>" . $i . "</strong>"; } else { echo $i; } } // your code goes here
Standard input is empty
0<strong>1</strong><strong>2</strong><strong>3</strong>45<strong>6</strong><strong>7</strong><strong>8</strong>910<strong>11</strong><strong>12</strong><strong>13</strong>1415<strong>16</strong><strong>17</strong><strong>18</strong>1920<strong>21</strong><strong>22</strong><strong>23</strong>2425<strong>26</strong><strong>27</strong><strong>28</strong>2930