filter_list()

(PHP 5 >= 5.2.0, PHP 7)

返回所支持的过滤器列表

说明

返回值

返回一个所支持的过滤器的名称的列表，如果没有这样子的过滤器的话则返回空数组。这个数组的索引不是过滤器id，你可以通过filter_id()去根据名称获取它们。

范例

一个filter_list()的例子

以上例程的输出类似于：

Array
(
    [0] => int
    [1] => boolean
    [2] => float
    [3] => validate_regexp
    [4] => validate_url
    [5] => validate_email
    [6] => validate_ip
    [7] => string
    [8] => stripped
    [9] => encoded
    [10] => special_chars
    [11] => unsafe_raw
    [12] => email
    [13] => url
    [14] => number_int
    [15] => number_float
    [16] => magic_quotes
    [17] => callback
)

Get filter_list() with filter_id() as key.

Array
(
  [257] => int
  [258] => boolean
  [259] => float
  [272] => validate_regexp
  [277] => validate_domain
  [273] => validate_url
  [274] => validate_email
  [275] => validate_ip
  [276] => validate_mac
  [513] => stripped
  [514] => encoded
  [515] => special_chars
  [522] => full_special_chars
  [516] => unsafe_raw
  [517] => email
  [518] => url
  [519] => number_int
  [520] => number_float
  [521] => magic_quotes
  [1024] => callback
)

0=int=257
1=boolean=258
2=float=259
3=validate_regexp=272
4=validate_url=273
5=validate_email=274
6=validate_ip=275
7=string=513
8=stripped=513
9=encoded=514
10=special_chars=515
11=unsafe_raw=516
12=email=517
13=url=518
14=number_int=519
15=number_float=520
16=magic_quotes=521
17=callback=1024

Output a table of Filter IDs as Integers with corresponding Constant IDs: 

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