3v4l.org

run code in 300+ PHP versions simultaneously
<?php //internal file if($msg_id) { $qlikes = mysql_query("SELECT * FROM group_likes WHERE msg_id = '$msg_id'") or die("Error while fetching likes"); $qrow = mysql_fetch_array($qlikes); $likes = mysql_num_rows($qlikes); $likes2 = $likes-1; $qliked = mysql_query("SELECT * FROM group_likes WHERE msg_id = '$msg_id' AND liker = '$user_id'") or die("error while getting user likes data"); $liked = mysql_num_rows($qliked); if($liked==1) { echo "<a class='like' href='unlike.php?id=".$msg_id."'>Unlike</a> &nbsp; "; if($likes > '1') { echo "You and ".$likes2." others likes this."; } else { echo "You like this."; } } else { echo "<a class='like' href='like.php?id=".$msg_id."'>Like</a> &nbsp; "; if($likes > 1 ) { echo $likes." others likes this."; } } } ?>
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
Warning: Undefined variable $msg_id in /in/3IoDS on line 5
Output for 5.0.4 - 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 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: msg_id in /in/3IoDS on line 5
Output for 7.3.32 - 7.3.33, 7.4.26
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: msg_id in /in/3IoDS on line 5

preferences:
276.37 ms | 402 KiB | 377 Q