Question

我正在使用PHP和kindlegen程序创建mobi文件生成器。

我有： - 路径/var/www/webook_disk/中的kindlegen文件 - PHP脚本

echo exec(./kindlegen /var/www/webook_disk/books_drafts/1234/book.opf -o 1234.mobi)

预订/var/www/webook_disk/books_drafts/1234/

当我运行PHP脚本时，我得到了这个日志：

Info(prcgen):I1002: Parsing files  0000002

当我从控制台运行./kindlegen /var/www/webook_disk/books_drafts/1234/book.opf -o 1234.mobi时，我得到了这个日志：

*************************************************************
 Amazon kindlegen(Linux) V2.9 build 1028-0897292 
 A command line e-book compiler 
 Copyright Amazon.com and its Affiliates 2014 
*************************************************************

Info(prcgen):I1047: Added metadata dc:Title        "Przykładowa książka"
Info(prcgen):I1047: Added metadata dc:Creator      "webook"
Info(prcgen):I1047: Added metadata dc:Publisher    "webook"
Info(prcgen):I1002: Parsing files  0000002
Info(prcgen):I1016: Building enhanced PRC file
Info(prcgen):I1015: Building PRC file
Info(prcgen):I1006: Resolving hyperlinks
Warning(prcgen):W14001: Hyperlink not resolved:  /2010/07/Wyprawa-zlodzieja-do-Mazeri.html
Warning(prcgen):W14002: Some hyperlinks could not be resolved.
Info(prcgen):I1008: Resolving start reading location
Warning(prcgen):W14016: Cover not specified
Info(pagemap):I8000: No Page map found in the book
Info(prcgen):I1045: Computing UNICODE ranges used in the book
Info(prcgen):I1046: Found UNICODE range: Basic Latin [20..7E]
Info(prcgen):I1046: Found UNICODE range: Latin Extended-A [100..17F]
Info(prcgen):I1046: Found UNICODE range: Latin-1 Supplement [A0..FF]
Info(prcgen):I1046: Found UNICODE range: General Punctuation - Windows 1252 [2013..2014]
Info(prcgen):I1017: Building PRC file, record count:   0000025
Info(prcgen):I1039: Final stats - text compressed to (in % of original size):  61.30%
Info(prcgen):I1040: The document identifier is: "PrzykKadowa_ksiBQka"
Info(prcgen):I1041: The file format version is V5
Info(prcgen):I1031: Saving PRC file
Info(prcgen):I1033: PRC built with WARNINGS!
Info(prcgen):I1007: Resolving mediaidlinks
Info(prcgen):I1011: Writing mediaidlinks
Info(prcgen):I1009: Resolving guide items
Info(prcgen):I1017: Building PRC file, record count:   0000027
Info(prcgen):I1039: Final stats - text compressed to (in % of original size):  60.45%
Info(prcgen):I1041: The file format version is V8
Info(prcgen):I1032: PRC built successfully
Info(prcgen):I15000:  Approximate Standard Mobi Deliverable file size :   0002209KB
Info(prcgen):I15001:  Approximate KF8 Deliverable file size :   0002215KB
Info(prcgen):I1037: Mobi file built with WARNINGS!

看起来PHP脚本没有完成执行kindlegen程序并在Info(prcgen):I1002: Parsing files 0000002

上停止

可能是什么原因？

**更新1 ** 当我将php命令从exec更改为shell_exec时，输出就是这样的：我将命令更改为shell_exec，这里是日志：

*************************************************************
 Amazon kindlegen(Linux) V2.9 build 1028-0897292 
 A command line e-book compiler 
 Copyright Amazon.com and its Affiliates 2014 
*************************************************************

Info(prcgen):I1047: Added metadata dc:Title        "Przykładowa książka"
Info(prcgen):I1047: Added metadata dc:Creator      "webook"
Info(prcgen):I1047: Added metadata dc:Publisher    "webook"
Info(prcgen):I1002: Parsing files  0000002

所以我使用哪个命令并不重要。问题是它突然停止了。

今天我发现var/crash报告了错误：但是日志很长，所以我把它放在了主旨中： https://gist.github.com/blaszczakphoto/a32fd65384fcd8dd4f48751bfd78e699

Answer 1

Looking at the documentation，exec的返回值如下：

命令结果的最后一行。如果你需要执行一个命令并将命令中的所有数据直接传回没有任何干扰，请使用passthru（）函数。

您可能需要使用shell_exec或passthru。

从PHP执行外部程序（kindlegen）没有完成没有任何错误

1 个答案: