HTML input arrays

Question

lt input name  foo         gt    I ve used these before  but I m wondering what it is called and if there is a specification for it   I couldn t find it in the HTML 4 01 Spec and results in various Google results only call it an  array  along with many PHP examples of processing the form data

User · Answer

As far as I know  there isn t anything on the HTML specs because browsers aren t supposed to do anything different for these fields  They just send them as they normally do and PHP is the one that does the parsing into an array  as do other languages

User · Answer

There are some references and pointers in the comments on this page at PHP net   Torsten says      Section C 8 of the XHTML spec s compatability guidelines apply to the use of the name attribute as a fragment identifier   If you check the DTD you ll find that the  name  attribute is still defined as CDATA for form elements     Jetboy says      according to this  http   www w3 org TR xhtml1  C 8 the type of the name attribute has been changed in XHTML 1 0  meaning that square brackets in XHTML s name attribute are not valid       Regardless  at the time of writing  the W3C s validator doesn t pick this up on a XHTML document

User · Answer

It s just PHP  not HTML   It parses all HTML fields with    into an array   So you can have   lt input type  checkbox  name  food    value  apple    gt   lt input type  checkbox  name  food    value  pear    gt    and when submitted  PHP will make   POST  food   an array  and you can access its elements like so   echo   POST  food   0      would output first checkbox selected   or to see all values selected   foreach    POST  food   as  value         print  value      Anyhow  don t think there is a specific name for it

User · Answer

Follow it      lt form action  index php  method  POST  gt   lt input type  number  name  array    value  1  gt   lt input type  number  name  array    value  2  gt   lt input type  number  name  array    value  3  gt   lt  --taking array input by input name array  -- gt   lt input type  number  name  array    value  4  gt   lt input type  submit  name  submit  gt   lt  form gt   lt  php  a   POST  array    echo  Input      a 3       Displaying Selected array Value foreach   a as  v        print r  v     print all array element      gt

[php] HTML input arrays

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