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 …
这个符号在PHP中意味着<?=什么？
用法示例:
<h2>Manage Role: > (<?= $myACL->getRoleNameFromID($_GET['roleID']); ?>)</h2>