在PHP中，可以使用>、<、==等比較運算符來比較numeric的大小。以下是使用這些運算符的一些示例：
>運算符比較兩個numeric值：$num1 = 10;
$num2 = 20;
if ($num1 > $num2) {
echo "Number 1 is greater than Number 2.";
} else {
echo "Number 1 is not greater than Number 2.";
}
<運算符比較兩個numeric值：$num1 = 10;
$num2 = 20;
if ($num1 < $num2) {
echo "Number 1 is less than Number 2.";
} else {
echo "Number 1 is not less than Number 2.";
}
==運算符比較兩個numeric值：$num1 = 10;
$num2 = 10;
if ($num1 == $num2) {
echo "Number 1 is equal to Number 2.";
} else {
echo "Number 1 is not equal to Number 2.";
}
注意：當比較numeric值時，無需將它們轉換為字符串。PHP會自動將它們視為數值進行比較。
