php - 如何计算数字的百分比？

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我想用PHP计算一个数字的百分比。例如:

$percentage = 50;
$totalWidth = 350;

对于此示例，350的50％= 175

我怎样才能做到这一点？

最佳答案

$percentage = 50;
$totalWidth = 350;

$new_width = ($percentage / 100) * $totalWidth;