php-7 Spaceship operator Generic numerical example
Example
Generic example in a form of $a <=> $b matrix.
0 <=> 1; // -1 (left operand less than right, right is greater)
0 <=> 0; // 0 (operands are equal)
1 <=> 0; // 1 (left operand greater than right, left is greater)
1 <=> 1; // 0 (operands are equal)
╔═══════╦════╦════╗
║ $a/$b ║ 0 ║ 1 ║
╠═══════╬════╬════╣
║ 0 ║ 0 ║ -1 ║
║ 1 ║ 1 ║ 0 ║
╚═══════╩════╩════╝
$a - leftmost column, $b - topmost row
