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Can I write variables directly or write true in the brackets after if? Please give me some advice. What will be the result if I write these two? -PHP Chinese website Q&A - Can I write variables directly or write true in the brackets after if? Please give me some advice. What will be the consequences if I write these two? -PHP Chinese website Q&A
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因为if后面的判断语句就是要判断执行if还是else后面的语句，如果你直接写if（true）的话，if后面永远是true，也就是说无论前面如何改变，都永远执行if里面的语句，不会执行else里面的语句。