请问php中的exec函数的第一个参数一定要用绝对路径吗?
如题!谢谢!如果必须要要绝对路径,怎么解决!
回复讨论(解决方案)
exec函数的第一个参数不是 command 命令吗?
exec函数的第一个参数不是 command 命令吗?
就是这个命令如果调用的是一个exe文件,那么这个文件一定要用绝对路径吗?
老毛,这个问题可以这样解决:
$relativePath = 'path/program.exe';
$absolutePath = realpath(relativePath);
然后使用$absolutePath即可。
老毛说这个问题他没有解决,大家继续帮忙啊,多谢了。
请问这个问题没有人回答吗?
在就是问什么用exec调用某些命令能够成功,有些不行?
是否需要使用绝对路径,要看被执行的程序是否在操作系统搜索范围内(PATH变量指示)
即便是在搜索范围内,使用绝对路径也不会有问题
执行是否成功还得考虑权限问题,只有匿名用户有执行权,才可能执行成功
在一个就是参数问题,当参数是文件名时,最好这个文件名用绝对路径。而相对路径是相对待执行的程序的,计算起来也比较麻烦
绝对路径肯定没问题
但windows下系统命令不用
linux下path指示的命令不用 (其实一般都会放到path的目录中...)
问题解决了。用//ip/path

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