Two arrays in foreach loop

Question

I want to generate a selectbox using two arrays  one containing the country codes and another containing the country names   This is an example    lt  php      codes   array  tn   us   fr         names   array  Tunisia   United States   France         foreach   codes as  code and  names as  name             echo   lt option value       code      gt      name     lt  option gt            gt    This method didn t work for me  Any suggestions

User · Answer

foreach only works with a single array  To step through multiple arrays  it s better to use the each   function in a while loop   while   code   each  codes    amp  amp    name   each  names          echo   lt option value       code  value        gt      name  value       lt  option gt        each   returns information about the current key and value of the array and increments the internal pointer by one  or returns false if it has reached the end of the array  This code would not be dependent upon the two arrays having identical keys or having the same sort of elements  The loop terminates when one of the two arrays is finished

User · Answer

foreach   codes as  code and  names as  name         That is not valid   You probably want something like this     foreach   codes as  index   gt   code        echo   lt option value       code      gt      names  index      lt  option gt        Alternatively  it d be much easier to make the codes the key of your  names array      names   array      tn    gt   Tunisia       us    gt   United States

User · Answer

Use an associative array    code names   array                       tn    gt   Tunisia                        us    gt   United States                        fr    gt   France     foreach  code names as  code   gt   name                 I believe that using an associative array is the most sensible approach as opposed to using array combine   because once you have an associative array  you can simply use array keys   or array values   to get exactly the same array you had before

User · Answer

array combine   worked great for me while combining   POST multiple values from multiple form inputs in an attempt to update products quantities in a shopping cart

User · Answer

Few arrays can also be iterated like this   foreach  array1 as  key  gt  val      Loop though one array      val2    array2  key      Get the values from the other arrays      val3    array3  key        result     array    Save result in third array        id    gt   val         quant    gt   val2         name    gt   val3

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I solved a problem like yours by this way   foreach array keys  idarr  as  i     echo  Student ID     idarr  i    lt br   gt     echo  Present     presentarr  i    lt br   gt     echo  Reason     reasonarr  i    lt br   gt     echo  Mark     markarr  i    lt br   gt

User · Answer

foreach operates on only one array at a time   The way your array is structured  you can array combine   them into an array of key-value pairs then foreach that single array   foreach  array combine  codes   names  as  code   gt   name        echo   lt option value       code      gt      name     lt  option gt        Or as seen in the other answers  you can hardcode an associative array instead

User · Answer

I think that you can do something like      codes   array  tn   us   fr      names   array  Tunisia   United States   France     foreach   codes as  key   gt   code        echo   lt option value       code      gt      names  key      lt  option gt        It should also work for associative arrays

User · Answer

lt  php   codes   array   tn   us   fr     names   array   Tunisia   United States   France     echo   lt table gt     foreach array keys  codes  as  i          echo   lt tr gt  lt td gt         echo   i   1        echo   lt  td gt  lt td gt         echo  codes  i        echo   lt  td gt  lt td gt         echo  names  i        echo   lt  td gt  lt  tr gt       echo   lt  table gt       gt

User · Answer

array map seems good for this too   codes   array  tn   us   fr     names   array  Tunisia   United States   France     array map function   code   name        echo   lt option value       code      gt      name     lt  option gt        codes   names     Other benefits are    If one array is shorter than the other  the callback receive null values to fill in the gap  You can use more than 2 arrays to iterate through

User · Answer

Why not just consolidate into a multi-dimensional associative array   Seems like you are going about this wrong    codes   array  tn   us   fr     names   array  Tunisia   United States   France      becomes    dropdown   array  tn    gt   Tunisia    us    gt   United States    fr    gt   France

User · Answer

All fully tested 3 ways to create a dynamic dropdown from an array  This will create a dropdown menu from an array and automatically assign its respective value  Method  1  Normal Array   lt  php   names   array  tn   gt  Tunisia   us   gt  United States   fr   gt  France     echo   lt select name  quot countries quot  gt     foreach  names AS  let  gt  word       echo   lt option value  quot    let   quot  gt    word   lt  option gt      echo   lt  select gt        gt     Method  2  Normal Array   lt select name  quot countries quot  gt    lt  php   countries   array  tn   gt   quot Tunisia quot    quot us quot   gt  United States   quot fr quot   gt  France    foreach  countries as  select  gt  country name   echo   lt option value  quot      select     quot  gt      country name     lt  option gt        gt    lt  select gt     Method  3  Associative Array   lt  php   my array   array        tn    gt   Tunisia         us    gt   United States         fr    gt   France      echo   lt select name  quot countries quot  gt    echo   lt option value  quot none quot  gt Select    lt  option gt    foreach   my array as  k   gt   v        echo   lt option value  quot      k     quot  gt      v     lt  option gt      echo   lt  select gt      gt

User · Answer

Your code like this is incorrect as foreach only for single array    lt  php          codes   array  tn   us   fr             names   array  Tunisia   United States   France             foreach   codes as  code and  names as  name                 echo   lt option value       code      gt      name     lt  option gt                    gt    Alternative  Change to this     lt  php          codes   array  tn   us   fr             names   array  Tunisia   United States   France             count   0           foreach  codes as  code                 echo   lt option value       code      gt      names count      lt  option gt                  count                 gt

User · Answer

Walk it out      codes   array  tn   us   fr     names   array  Tunisia   United States   France       PHP 5 3   array walk  codes  function   code  key  use   names         echo   lt option value       code      gt      names  key      lt  option gt         Before PHP 5 3  array walk  codes  function   code  key  names        echo   lt option value       code      gt      names  key      lt  option gt       names    or combine  array walk array combine  codes  names   function   name  code        echo   lt option value       code      gt      name     lt  option gt        in select  array walk array combine  codes  names   function   name  code          opts     lt option value       code      gt      name     lt  option gt       echo   lt select gt  opts lt  select gt       demo

User · Answer

I think the simplest way is just to use the for loop this way      codes   array  tn   us   fr     names   array  Tunisia   United States   France     for  i   0   i  lt  sizeof  codes    i         echo   lt option value       codes  i       gt      names  i      lt  option gt

User · Answer

Use array combine   to fuse the arrays together and iterate over the result    countries   array combine  codes   names

User · Answer

You should try this for the putting 2 array in singlr foreach loop Suppose i have 2 Array  1  item nm 2  item qty     lt  php  i 1    gt   lt table gt  lt tr gt  lt td gt Sr No lt  td gt   lt td gt item nm lt  td gt    lt td gt item qty lt  td gt      lt  tr gt      foreach  array combine  item nm   item qty  as  item nm   gt   item qty   lt tr gt            lt td gt   i     lt  td gt           lt td gt    item nm   lt  td gt           lt td gt   item qty   lt  td gt      lt  tr gt  lt  table gt    endforeach

User · Answer

You can use array merge to combine two arrays and then iterate over them    array1   array  foo    gt   bar     array2   array  hello    gt   world     both arrays   array merge  array  array1   array  array2   print r  both arrays

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if isset   POST  doors       true    doors     POST  doors     else  doors   0    if isset   POST  windows       true    windows     POST  windows     else  windows   0    foreach  doors as  a   gt   b     Now you can use  a for each array       doors  a   windows  a

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it works for me   counter   0  foreach  codes as  code     codes array  counter   code   counter       counter   0  foreach  names as  name    echo  codes array  counter   and   name   counter

User · Answer

This worked for me    codes   array  tn    us    fr     names   array  Tunisia    United States    France    foreach  codes as  key   gt   value        echo  Code is       codes  key      -      and Name       names  key      lt br gt

User · Answer

Instead of foreach loop  try this  only when your arrays have same length     number   COUNT   POST  codes       count how many arrays available if  number  gt  0          for  i 0   i lt  number   i     loop thru each arrays          codes    POST  codes    i        names    POST  names    i         ur code in here

[php] Two arrays in foreach loop

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