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From Wjghj Project Statics
console.log('hello, world')
// 显示行号
console.log('hello, world')
// 行号会从 3 开始
console.log('Line 4!')
console.log('Oh, that is five')
// 第 2 以及第 4 行会高亮显示
console.log('hello, world')
console.log('Oh, yeah')
console.log('I\'m pinged!')
1 <?php
2   echo 'hey!';
3 ?>