<?php
function sum($a, $b, $c)
{
$total = $a + $b + $c;
// if($total < 0){
// return 0;
// }else{
// return $total;
// }
return $total < 0 ? 0 : $total;
}
echo sum(100, 300, 500) .PHP_EOL; //900
echo sum(-1000, 300, 500) .PHP_EOL; //0
PHP 条件演算子
<?php
function sum($a, $b, $c)
{
$total = $a + $b + $c;
// if($total < 0){
// return 0;
// }else{
// return $total;
// }
return $total < 0 ? 0 : $total;
}
echo sum(100, 300, 500) .PHP_EOL; //900
echo sum(-1000, 300, 500) .PHP_EOL; //0