Online PHP editor | output for co1P7

@ 2013-05-07T06:46:43Z

<?php
function grammar($description)
{
	$g=array();
    foreach(explode("\n",$description) as $line)
    {
        $sides = explode(" => ",$line);
        $lhs = $sides[0];
		$rhs = $sides[1];
		$alternatives = explode(' | ',$rhs);
        $g[$lhs] = array(array_map("explode",$alternatives,array(" ")));
    }
    return $g;
}
$des =<<<G
Exp => Term [+-] Exp | Term
G;
print_r(grammar($des));

Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Deprecated: explode(): Passing null to parameter #2 ($string) of type string is deprecated in /in/co1P7 on line 11 Array ( [Exp] => Array ( [0] => Array ( [0] => Array ( [0] => ) [1] => Array ( [0] => ) ) ) )
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 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 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30: Array ( [Exp] => Array ( [0] => Array ( [0] => Array ( [0] => ) [1] => Array ( [0] => ) ) ) )

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