=和==的区别？

Question

$a=$b和$a==$b 有什么区别

Answer 1

What is the difference between

= and ==? -PHP Chinese website Q&A-What is the difference between = and ==? -PHP Chinese website Q&A

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Answer 2

左边是将变量$b的值赋给$a。右边是判断$a和$b是否相等，返回的是个布尔类型的值。