[英]How to retrieve value from multi-dimenionsal array in PHP
在PHP中,如何将标识符传递给函数以从多维数组中检索值? 使用以下功能,如何使用$ identifier变量返回“ Female”?
function phrase($identifier) {
$lang = array();
$lang['settings'] = 'Personal settings';
$lang['entergender'] = 'Please select your gender';
$lang['gender']['m'] = 'Male';
$lang['gender']['f'] = 'Female';
return $lang[$identifier];
}
phrase('gender/f');//obviously this won't work
您可以编写可变参数函数来请求多个数组维度。 然后,您将使用每个维度的键作为参数来调用函数。
下面的代码使用func_num_args()
和func_get_arg()
迭代传递给函数的参数。
function phrase() {
$lang = array();
$lang['settings'] = 'Personal settings';
$lang['entergender'] = 'Please select your gender';
$lang['gender']['m'] = 'Male';
$lang['gender']['f'] = 'Female';
$lang['foo']['bar']['baz'] = 'Hello!';
$val = $lang;
for ($i = 0; $i < func_num_args(); $i++) {
$val = $val[func_get_arg($i)];
}
return $val;
}
print phrase('settings');
print phrase('gender', 'f');
print phrase('foo', 'bar', 'baz');
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