我该如何添加+符号

Question

<?php
   $numbers = array("12", "-32", "52", "-65", "98");
   $arrlength = count($numbers);

for($x = 0; $x < $arrlength; $x++) {
   echo $numbers[$x];
   echo "<br>";
}

如何添加+符号不是 - 减去.

结果: + 12,-32,+ 52,-65,+ 98

Answer 1

你可以添加这样的条件:

echo (int)$numbers[$x] > 0 ? '+'.$numbers[$x] : $numbers[$x];

所以它会

$numbers = array("12", "-32", "52", "-65", "98");
$arrlength = count($numbers);

for($x = 0; $x < $arrlength; $x++) {
echo ((int)$numbers[$x] > 0) ? '+'.$numbers[$x] : $numbers[$x];
echo "<br>";
}