3v4l.org

run code in 300+ PHP versions simultaneously
<!-- Má posta á hvaða síðu sem er innan WP vefsins --> <form method="post" action=""> <!-- POST request verður alltaf að innihalda field með heitinu 'afylling' --> <input type="hidden" name="afylling" /> <!-- $_SESSION['afylling']['errors'] er array af strengjum sem innihalda villuskilaboð --> <!-- Default (engar villur) er tómur array --> <?php foreach ($_SESSION['afylling']['errors'] as $error) : ?> <span style="color: red; display:block;"><?= $error; ?></span> <?php endforeach ?> <!-- Fyrra skref áfyllingar --> <!-- step er default 1 --> <?php if($_SESSION['afylling']['step'] == 1) : ?> <!-- Innbyggt WP validation --> <?php wp_nonce_field('afylling_step1'); ?> <!-- Required fields --> <input type="text" placeholder="Símanúmer" name="afylling_simanumer" value="<?= $_SESSION['afylling']['data']['simanumer']; ?>" /> <input type="text" placeholder="Upphæð" name="afylling_upphaed" value="<?= $_SESSION['afylling']['data']['upphaed']; ?>" /> <!-- Seinna skref áfyllingar, ef fyrra skref tekst --> <?php elseif($_SESSION['afylling']['step'] == 2) : ?> <!-- Innbyggt WP validation --> <?php wp_nonce_field('afylling_step2'); ?> <!-- Required fields --> <input type="text" placeholder="Kortanúmer" name="afylling_kortanumer" /> <input type="text" placeholder="MM" name="afylling_mm" /> <input type="text" placeholder="ÁÁ" name="afylling_aa" /> <input type="text" placeholder="CVC" name="afylling_cvc" /> <?php endif ?> <!-- Skiptir ekki máli hvert value er hér --> <input type="submit" name="submit" value="Submit" /> </form>
Output for 8.3.0 - 8.3.6
<!-- Má posta á hvaða síðu sem er innan WP vefsins --> <form method="post" action=""> <!-- POST request verður alltaf að innihalda field með heitinu 'afylling' --> <input type="hidden" name="afylling" /> <!-- $_SESSION['afylling']['errors'] er array af strengjum sem innihalda villuskilaboð --> <!-- Default (engar villur) er tómur array --> Warning: Undefined global variable $_SESSION in /in/2JDKY on line 9 Warning: Trying to access array offset on null in /in/2JDKY on line 9 Warning: Trying to access array offset on null in /in/2JDKY on line 9 Warning: foreach() argument must be of type array|object, null given in /in/2JDKY on line 9 <!-- Fyrra skref áfyllingar --> <!-- step er default 1 --> Warning: Undefined global variable $_SESSION in /in/2JDKY on line 15 Warning: Trying to access array offset on null in /in/2JDKY on line 15 Warning: Trying to access array offset on null in /in/2JDKY on line 15 Warning: Undefined global variable $_SESSION in /in/2JDKY on line 25 Warning: Trying to access array offset on null in /in/2JDKY on line 25 Warning: Trying to access array offset on null in /in/2JDKY on line 25 <!-- Skiptir ekki máli hvert value er hér --> <input type="submit" name="submit" value="Submit" /> </form>
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
<!-- Má posta á hvaða síðu sem er innan WP vefsins --> <form method="post" action=""> <!-- POST request verður alltaf að innihalda field með heitinu 'afylling' --> <input type="hidden" name="afylling" /> <!-- $_SESSION['afylling']['errors'] er array af strengjum sem innihalda villuskilaboð --> <!-- Default (engar villur) er tómur array --> Warning: Undefined global variable $_SESSION in /in/2JDKY on line 9 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 9 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 9 Warning: foreach() argument must be of type array|object, null given in /in/2JDKY on line 9 <!-- Fyrra skref áfyllingar --> <!-- step er default 1 --> Warning: Undefined global variable $_SESSION in /in/2JDKY on line 15 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 15 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 15 Warning: Undefined global variable $_SESSION in /in/2JDKY on line 25 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 25 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 25 <!-- Skiptir ekki máli hvert value er hér --> <input type="submit" name="submit" value="Submit" /> </form>
Output for 8.0.0 - 8.0.30
<!-- Má posta á hvaða síðu sem er innan WP vefsins --> <form method="post" action=""> <!-- POST request verður alltaf að innihalda field með heitinu 'afylling' --> <input type="hidden" name="afylling" /> <!-- $_SESSION['afylling']['errors'] er array af strengjum sem innihalda villuskilaboð --> <!-- Default (engar villur) er tómur array --> Warning: Undefined variable $_SESSION in /in/2JDKY on line 9 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 9 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 9 Warning: foreach() argument must be of type array|object, null given in /in/2JDKY on line 9 <!-- Fyrra skref áfyllingar --> <!-- step er default 1 --> Warning: Undefined variable $_SESSION in /in/2JDKY on line 15 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 15 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 15 Warning: Undefined variable $_SESSION in /in/2JDKY on line 25 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 25 Warning: Trying to access array offset on value of type null in /in/2JDKY on line 25 <!-- Skiptir ekki máli hvert value er hér --> <input type="submit" name="submit" value="Submit" /> </form>
Output for 7.4.0 - 7.4.33
<!-- Má posta á hvaða síðu sem er innan WP vefsins --> <form method="post" action=""> <!-- POST request verður alltaf að innihalda field með heitinu 'afylling' --> <input type="hidden" name="afylling" /> <!-- $_SESSION['afylling']['errors'] er array af strengjum sem innihalda villuskilaboð --> <!-- Default (engar villur) er tómur array --> Notice: Undefined variable: _SESSION in /in/2JDKY on line 9 Notice: Trying to access array offset on value of type null in /in/2JDKY on line 9 Notice: Trying to access array offset on value of type null in /in/2JDKY on line 9 Warning: Invalid argument supplied for foreach() in /in/2JDKY on line 9 <!-- Fyrra skref áfyllingar --> <!-- step er default 1 --> Notice: Undefined variable: _SESSION in /in/2JDKY on line 15 Notice: Trying to access array offset on value of type null in /in/2JDKY on line 15 Notice: Trying to access array offset on value of type null in /in/2JDKY on line 15 Notice: Undefined variable: _SESSION in /in/2JDKY on line 25 Notice: Trying to access array offset on value of type null in /in/2JDKY on line 25 Notice: Trying to access array offset on value of type null in /in/2JDKY on line 25 <!-- Skiptir ekki máli hvert value er hér --> <input type="submit" name="submit" value="Submit" /> </form>
Output for 7.3.32 - 7.3.33
<!-- Má posta á hvaða síðu sem er innan WP vefsins --> <form method="post" action=""> <!-- POST request verður alltaf að innihalda field með heitinu 'afylling' --> <input type="hidden" name="afylling" /> <!-- $_SESSION['afylling']['errors'] er array af strengjum sem innihalda villuskilaboð --> <!-- Default (engar villur) er tómur array --> Warning: Invalid argument supplied for foreach() in /in/2JDKY on line 9 <!-- Fyrra skref áfyllingar --> <!-- step er default 1 --> <!-- Skiptir ekki máli hvert value er hér --> <input type="submit" name="submit" value="Submit" /> </form>
Output for 5.2.1 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31
<!-- Má posta á hvaða síðu sem er innan WP vefsins --> <form method="post" action=""> <!-- POST request verður alltaf að innihalda field með heitinu 'afylling' --> <input type="hidden" name="afylling" /> <!-- $_SESSION['afylling']['errors'] er array af strengjum sem innihalda villuskilaboð --> <!-- Default (engar villur) er tómur array --> Notice: Undefined variable: _SESSION in /in/2JDKY on line 9 Warning: Invalid argument supplied for foreach() in /in/2JDKY on line 9 <!-- Fyrra skref áfyllingar --> <!-- step er default 1 --> Notice: Undefined variable: _SESSION in /in/2JDKY on line 15 Notice: Undefined variable: _SESSION in /in/2JDKY on line 25 <!-- Skiptir ekki máli hvert value er hér --> <input type="submit" name="submit" value="Submit" /> </form>
Output for 4.3.0 - 4.3.10, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
<!-- Má posta á hvaða síðu sem er innan WP vefsins --> <form method="post" action=""> <!-- POST request verður alltaf að innihalda field með heitinu 'afylling' --> <input type="hidden" name="afylling" /> <!-- $_SESSION['afylling']['errors'] er array af strengjum sem innihalda villuskilaboð --> <!-- Default (engar villur) er tómur array --> Warning: Invalid argument supplied for foreach() in /in/2JDKY on line 9 <!-- Fyrra skref áfyllingar --> <!-- step er default 1 --> Notice: Undefined index: step in /in/2JDKY on line 15 Notice: Undefined index: step in /in/2JDKY on line 25 <!-- Skiptir ekki máli hvert value er hér --> <input type="submit" name="submit" value="Submit" /> </form>
Output for 4.3.11
<!-- Má posta á hvaða síðu sem er innan WP vefsins --> <form method="post" action=""> <!-- POST request verður alltaf að innihalda field með heitinu 'afylling' --> <input type="hidden" name="afylling" /> <!-- $_SESSION['afylling']['errors'] er array af strengjum sem innihalda villuskilaboð --> <!-- Default (engar villur) er tómur array --> <!-- Fyrra skref áfyllingar --> <!-- step er default 1 --> Notice: Undefined index: step in /in/2JDKY on line 15 Notice: Undefined index: step in /in/2JDKY on line 25 <!-- Skiptir ekki máli hvert value er hér --> <input type="submit" name="submit" value="Submit" /> </form>
preferences:
298.36 ms | 402 KiB | 370 Q