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PHP中能否将整数转换为浮点数，且保留两位小数？

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PHP中能否将整数转换为浮点数，且保留两位小数？

例如整数2转换为2.00且var_dump后得结果要为float(2.00)，请问有这种可能吗？

尝试过number_format和sprintf，输出的都是字符串，望老哥解惑


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