Why && return true and and return false?

This question already has an answer here:

  • 'AND' vs '&&' as operator 10 answers

  • PHP:第一个代码将$ x设置为$ b与$ c的比较结果,两者都必须为真,第二个代码将设置$ y,如$ b和thant,将此成功与$ C


    The precedence of operators is what makes the difference here.

    PHP Operator Precedence

    JavaScript Operator Precedence

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