3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date = mktime(0, 0, 0, 4, 1, 2013); $days = date("t", $date); for ($i = 1; $i <= $days; $i++) { if(i % 4 == 0){ echo "<div style='color: red'>" . $i . "</div>"; } else{ echo $i; } }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Undefined constant "i" in /in/HsUAr:7 Stack trace: #0 {main} thrown in /in/HsUAr on line 7
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>1</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>2</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>3</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>4</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>5</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>6</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>7</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>8</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>9</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>10</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>11</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>12</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>13</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>14</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>15</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>16</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>17</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>18</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>19</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>20</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>21</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>22</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>23</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>24</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>25</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>26</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>27</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>28</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>29</div> Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>30</div>
Output for 7.1.0 - 7.1.20
Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>1</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>2</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>3</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>4</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>5</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>6</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>7</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>8</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>9</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>10</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>11</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>12</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>13</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>14</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>15</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>16</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>17</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>18</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>19</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>20</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>21</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>22</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>23</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>24</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>25</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>26</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>27</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>28</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>29</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 Warning: A non-numeric value encountered in /in/HsUAr on line 7 <div style='color: red'>30</div>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20
Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>1</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>2</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>3</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>4</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>5</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>6</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>7</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>8</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>9</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>10</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>11</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>12</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>13</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>14</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>15</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>16</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>17</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>18</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>19</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>20</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>21</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>22</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>23</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>24</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>25</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>26</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>27</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>28</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>29</div> Notice: Use of undefined constant i - assumed 'i' in /in/HsUAr on line 7 <div style='color: red'>30</div>
preferences:
219.8 ms | 411 KiB | 354 Q