php中反引号及双引号中的反引号
<?php$x = `date`;echo $x;?> 结果Sat 20 Feb 2021 03:01:12 AM UTC<?php$x = "输出字符 `date`";echo $x;?>结果：输出字符 `date`"<?phpfunction tablename($table){ return "`{$GLOBALS['_W']['config']['db']['master'
