3v4l.org

run code in 300+ PHP versions simultaneously
<?php foreach($_POST['language'] as $value) { echo 'Checked: '.$value.' '; } ?> <html> <head> <head/> <title> <title/> <body> <form action="index.php" method="post"> <input type="checkbox" name="language[]" value="php" />PHP<br /> <input type="checkbox" name="language[]" value="html" />HTML<br /> <input type="checkbox" name="language[]" value="java" />Java<br /> <input type="checkbox" name="language[]" value="c++" />C++<br /> <input type="submit" value="send" /> </form> <body/> <html/>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined array key "language" in /in/565Iq on line 2 Warning: foreach() argument must be of type array|object, null given in /in/565Iq on line 2 <html> <head> <head/> <title> <title/> <body> <form action="index.php" method="post"> <input type="checkbox" name="language[]" value="php" />PHP<br /> <input type="checkbox" name="language[]" value="html" />HTML<br /> <input type="checkbox" name="language[]" value="java" />Java<br /> <input type="checkbox" name="language[]" value="c++" />C++<br /> <input type="submit" value="send" /> </form> <body/> <html/>
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined index: language in /in/565Iq on line 2 Warning: Invalid argument supplied for foreach() in /in/565Iq on line 2 <html> <head> <head/> <title> <title/> <body> <form action="index.php" method="post"> <input type="checkbox" name="language[]" value="php" />PHP<br /> <input type="checkbox" name="language[]" value="html" />HTML<br /> <input type="checkbox" name="language[]" value="java" />Java<br /> <input type="checkbox" name="language[]" value="c++" />C++<br /> <input type="submit" value="send" /> </form> <body/> <html/>
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, 7.3.32 - 7.3.33
Warning: Invalid argument supplied for foreach() in /in/565Iq on line 2 <html> <head> <head/> <title> <title/> <body> <form action="index.php" method="post"> <input type="checkbox" name="language[]" value="php" />PHP<br /> <input type="checkbox" name="language[]" value="html" />HTML<br /> <input type="checkbox" name="language[]" value="java" />Java<br /> <input type="checkbox" name="language[]" value="c++" />C++<br /> <input type="submit" value="send" /> </form> <body/> <html/>
Output for 5.2.1 - 5.2.17
Notice: Undefined index: language in /in/565Iq on line 2 Warning: Invalid argument supplied for foreach() in /in/565Iq on line 2 <html> <head> <head/> <title> <title/> <body> <form action="index.php" method="post"> <input type="checkbox" name="language[]" value="php" />PHP<br /> <input type="checkbox" name="language[]" value="html" />HTML<br /> <input type="checkbox" name="language[]" value="java" />Java<br /> <input type="checkbox" name="language[]" value="c++" />C++<br /> <input type="submit" value="send" /> </form> <body/> <html/>
Output for 4.3.11
<html> <head> <head/> <title> <title/> <body> <form action="index.php" method="post"> <input type="checkbox" name="language[]" value="php" />PHP<br /> <input type="checkbox" name="language[]" value="html" />HTML<br /> <input type="checkbox" name="language[]" value="java" />Java<br /> <input type="checkbox" name="language[]" value="c++" />C++<br /> <input type="submit" value="send" /> </form> <body/> <html/>

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