Online PHP editor | output for Hlaf8

@ 2017-11-20T17:15:19Z

<?php

$d = distance([2,4], [26,9]);

echo 'distance is : ' .$d;



function distance( $p1=array(), $p2=array())
{
    $x1 = $p1[0];
    $x2 = $p2[0];
    
    $y1 = $p1[1];
    $y2 = $p2[1];
    
    echo "y1 is : $y1\n";
    echo "y2 is : $y2\n";
    echo "x1 is : $x1\n";
    echo "x2 is : $x2\n";
    
   
   $p1 = ($x1 - $x2);
   $p2 = ($y1 - $y2);
   $distance = sqrt(( $p1 + $p2 ));
   
   /**
   $points = [$p1, $p2];
     
    $distance = array_sum($points);
    $distance = sqrt(($x1 - $x2) + ($y1 - $y2))**2;
    
   */
   //$distance = hypot($p1, $p2);
    
    return $distance;
}

Output for 7.0.0 - 7.0.25, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: y1 is : 4 y2 is : 9 x1 is : 2 x2 is : 26 distance is : NAN
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 y1 is : 4 y2 is : 9 x1 is : 2 x2 is : 26 distance is : NAN

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