<?php
$A = 2;
$B = 4;
$C = 5;$inp = "X=A+B-C";
$inp = "X=A*B+C";$out = preg_replace("/(\w+)/","\$$1",$inp);
echo eval("return $out;");?>
$A = 2;
$B = 4;
$C = 5;$inp = "X=A+B-C";
$inp = "X=A*B+C";$out = preg_replace("/(\w+)/","\$$1",$inp);
echo eval("return $out;");?>
解决方案 »
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