PHP用反撇号执行外部命令
例如:
echo `whoami`;
// 导出数据库,要导入的文件夹必须要有可写权限, -u -p之后的内容必须要紧挨着写
代码如下:
echo `mysqldump -h localhost -u$DbUser -p$DbPwd --default-character-set=utf8 $DbName > /var/$dumpFileName`;
反撇号其他用法
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#使用反撇号,暗示作为命令来执行 $result=`date`; echo " the server timestamp is: $result ";
echo " "; #使用shell_exec() $result1=shell_exec("date"); echo " the server timestamp is: $result1 ";?> |
输出结果如下:
the server timestamp is: 当前日期: 2009/06/30 二输入新日期: (年月日)

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