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Created December 25, 2012 04:43
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echo print print_r的区别?
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echo_print.md

Echo是PHP语句，print与print_r是函数，语句没有返回值，函数可以有返回值。

Print只能打印简单类型变量的值。

Print_r可以打印复杂变量值（数组或对象）

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