This is a collection of questions that come up every now and then about syntax in PHP. This is also a Community Wiki, so everyone is invited to participate in maintaining this list.
It used to be hard to find questions about operators and other syntax tokens.¹
The main idea is to have links to existing questions on Stack Overflow, so it's easier for us to reference them, not to copy over content from …
几年前,在我知道SO之前,这发生在我身上,但我仍然很好奇.当我还在学习PHP的基础知识时,我偶然输入了$i = $i++; 当我在浏览器中测试网页时,服务器崩溃了,需要很长时间才能恢复.我之前输入了一些非常愚蠢的东西并创建了一堆无限循环,但由于某种原因,这是最糟糕的.有谁知道为什么这条线是如此'有毒'