douchan7552 2012-09-13 10:40
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EXEC功能无法以所需方式工作

I am trying to use exec() in php but looks like all my efforts are in vain !!!

Please help me : What is wrong with my code?

$cmd = "mysqldump -u root my_db table1 table2 > /home/aditi/Desktop/databasedump.sql";              
$res = exec($cmd , $ot , $res);

But I don't see this file. But when I do this on console there is no problem.

Any help will be appreciated.

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4条回答 默认 最新

  • doulangdang9986 2012-09-13 10:46
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    A few possible causes:

    • the password for the dump is missing: $cmd = "mysqldump -u root -pPassword my_db table1 table2 > /home/aditi/Desktop/databasedump.sql";

    • mysqldump is not in the path when you run a shell: $cmd = "/usr/bin/mysqldump -u root -pPassword my_db table1 table2 > /home/aditi/Desktop/databasedump.sql";

    • Do not forget that the webserver process runs as another user as when you run the code in a shell. Make sure the webserver user id has access to the folder for writing the dump.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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