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PHP获取配置信息函数:ini_get详解

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Release: 2016-06-20 13:04:21
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PHP获取配置信息函数:ini_get详解

函数:ini_get(PHP 4, PHP 5)

作用:获取一个配置选项的值,是获取php.ini里的环境变量的值.

基础语法:string ini_get ( string varname )

函数参数:varname #配置选项名称。

返回值:#成功是返回配置选项值的字符串,null 的值则返回空字符串。如果配置选项不存在,将会返回 FALSE。

#注:返回值如果为布尔型则为0或1案例展示例如:

php.ini文件中包含了以下的设置:

register_globals = Off

post_max_size = 2M

PHP部分我们可以这样获取:

<?php<br />echo 'display_errors = ' . ini_get('display_errors') . "\n";<br />echo 'register_globals = ' . ini_get('register_globals') . "\n";<br />echo 'post_max_size = ' . ini_get('post_max_size') . "\n";<br />echo 'post_max_size+1 = ' . (ini_get('post_max_size')+1) . "\n";<br />echo 'post_max_size in bytes = ' . return_bytes(ini_get('post_max_size'));<br /><p>?><span style="font-size: 14px;">
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如果想获取整个php.ini里的变量值,我们可以用ini_get的加强函数 ini_get_all()

ini_get_all()函数以数组的形式返回整个php的环境变量

当然如果你只是想了解下php的配置信息用
<?php<br />phpinfo();<br />?>
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更方便。


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