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怎么正确运用PHP ini_set函数

Jun 13, 2016 am 10:40 AM
display include ini php set

如何正确运用PHP ini_set函数

引用
PHP ini_set函数的主要功能就是帮助我们设置选项中的值,并在脚本结束之后,使这个设置也同样失效。在这篇文章中我们将会具体讲解相关用法。
在PHP配置函数中,有一种函数的功能是实现设置php.ini中的某些变量值的。它就是我们今天要为大家介绍的PHP ini_set函数。

PHP ini_set函数是设置选项中的值,在执行函数后生效,脚本结束的时候,这个设置也失效。不是所有的选项都能被改函数设置的。具体那些值能够设置,可以查看手册中的列表。

就是能够设置php.ini中的选项值比如,display_error选项关闭了,但是你要显示程序中的错误信息,方便你调试程序,那么就可以使用PHP ini_set函数:


ini_set(”display_errors”, “On”); 那么在你这个页面的程序都会显示错误信息了,而且你还可以使用error_reporting来设置显示的错误信息级别。
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如果你需要增加脚本执行时间,那么可以设置:


ini_set(”max_execution_time”, “180″); 那么脚本执行时间就由默认的30秒变为180秒,当然,你也可以使用set_time_limit()来设置。
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其实你把PHP ini_set函数和ini_get结合使的话,非常好。比如你想在配置文件里添加自己的包含文件路径,但是你有没有权限更改php.ini,那么你可以结合两个函数:


ini_set(’include_path’,ini_get(’include_path’).’:/your_include_dir:’); 
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