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 …
Google从它们索引的文本中删除了大多数特殊字符,因此它不适用于许多与故障排除相关的任务,例如查找变量"$ - "在perl中的内容,或者搜索加载了特殊字符的错误输出.
有没有一种在网络上搜索此类内容的好方法？
此问题与以下问题有关:在Google中查找特殊字符