3v4l.org

run code in 300+ PHP versions simultaneously
<?php function similarity($w1,$w2) { //return cosine similarity of w1 and w2 using formula in the //definition here: http://en.wikipedia.org/wiki/Cosine_similarity //get numerator: $numerator = 0; for($i = 0, $l = count($w1); $i < $l; $i++) $numerator += $w1[$i]*$w2[$i]; //get abs(w1) and abs(w2) $abs_w1 = 0; $abs_w2 = 0; for($i = 0, $l = count($w1); $i < $l; $i++) { $abs_w1 += $w1[i]*$w1[i]; $abs_w2 += $w2[i]*$w2[i]; } $abs_w1 = sqrt($abs_w1); $abs_w2 = sqrt($abs_w2); //make denominator: $denominator = $abs_w1*$abs_w2; return $numerator/$denominator; } similarity([1,2,3,4,5,6,7,8,9],[1,2,3,4,5,6,7,8,88]);
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/ZEVrL:13 Stack trace: #0 /in/ZEVrL(25): similarity(Array, Array) #1 {main} thrown in /in/ZEVrL on line 13
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 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/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Division by zero in /in/ZEVrL on line 22
Output for 7.3.32 - 7.3.33
Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 13 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/ZEVrL on line 14 Warning: Division by zero in /in/ZEVrL on line 22
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 13 Notice: Undefined index: i in /in/ZEVrL on line 13 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Notice: Use of undefined constant i - assumed 'i' in /in/ZEVrL on line 14 Notice: Undefined index: i in /in/ZEVrL on line 14 Warning: Division by zero in /in/ZEVrL on line 22
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/ZEVrL on line 25
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[', expecting ')' in /in/ZEVrL on line 25
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/ZEVrL on line 25
Process exited with code 255.
preferences:
226.72 ms | 401 KiB | 314 Q