3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?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 += $w1*$w1; $abs_w2 += $w2*$w2; } $abs_w1 = sqrt($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 5.4.0 - 5.4.32
Parse error: syntax error, unexpected ',', expecting '&' or variable (T_VARIABLE) in /in/6v9O2 on line 2
Process exited with code 255.
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected ',', expecting '&' or T_VARIABLE in /in/6v9O2 on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected ',', expecting '&' or T_VARIABLE in /in/6v9O2 on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/6v9O2 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting ')' in /in/6v9O2 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/6v9O2 on line 2
Process exited with code 255.