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字符串相等缘故

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Release： 2016-06-13 11:48:51
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字符串相等原因
请教一下，为何PHP认为一下两个字符串是相等的？
if("03E-004611"=="36E-008026") echo '相等';
------解决方案--------------------

本帖最后由 xuzuning 于 2014-02-08 17:10:29 编辑 
var_dump("03E-004611"=="36E-008026"); //bool(true)<br />var_dump(03E-004611, 36E-008026); //float(0) float(0)<br />var_dump("03E-004611"==="36E-008026"); //bool(false)<br />
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由数字组成的串，在比较时会先转换为数值
------解决方案--------------------
因为E是10的幕运算 "03E-004611"转换成符点数时已经无限接近0了,3*pow(10,-4611),达不到这么高的精度,所以就都是0了.
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