How to rename array keys in PHP

Question

When I var dump on a variable called  tags  a multidimensional array  I get this   Array        0     Array                        name     tabbing              url     tabbing                 1     Array                        name     tabby ridiman              url     tabby-ridiman                 2     Array                        name     tables              url     tables                 3     Array                        name     tabloids              url     tabloids                 4     Array                        name     taco bell              url     taco-bell                 5     Array                        name     tacos              url     tacos               I would like to rename all array keys called  url  to be called  value   What would be a good way to do this

User · Answer

class DataHelper       private static function   renameArrayKeysRecursive  map        amp  array        level   0   amp  storage                 foreach   map as  old   gt   new                 old   preg replace         1            trim  old                if   new                    if   is array  new                          array  new     array  old                        storage  level   old     new                      unset  array  old                      else                       if  isset  array  old                              static    renameArrayKeysRecursive  new   array  old    level   1   storage                         else if  isset  array  storage  level   old                               static    renameArrayKeysRecursive  new   array  storage  level   old     level   1   storage                                                                                         Renames array keys   add     at the end of key in mapping array if you want rename multidimentional array key           param type  map         param type  array            public static function renameArrayKeys  map        amp  array                      storage               static    renameArrayKeysRecursive  map   array  0   storage           unset  storage             Use   DataHelper  renameArrayKeys        a    gt   b        abc     gt            abcd    gt   dcba            yourArray

User · Answer

Loop through  set new key  unset old key   foreach  tags as  amp  val        val  value      val  url        unset  val  url

User · Answer

Recursive php rename keys function   function replaceKeys  oldKey   newKey  array  input        return   array         foreach   input as  key   gt   value            if   key    oldKey               key    newKey           if  is array  value                value   replaceKeys   oldKey   newKey   value             return  key     value            return  return

User · Answer

Very simple approach to replace keys in a multidimensional array  and maybe even a bit dangerous  but should work fine if you have some kind of control over the source array   array      oldkey    gt     oldkey    gt   wow       new array   json decode str replace   quot oldkey quot       quot newkey quot     json encode  array     print r  new array         newkey    gt     newkey    gt   wow

User · Answer

Talking about functional PHP  I have this more generic answer       array map function  arr            ret    arr           ret  value      ret  url            unset  ret  url             return  ret          tag

User · Answer

This is how I rename keys  especially with data that has been uploaded in a spreadsheet  function changeKeys  array   new keys         newArray            foreach  array as  row             oldKeys   array keys  row            indexedRow                foreach  new keys as  index   gt   newKey               indexedRow  newKey    isset  oldKeys  index      row  oldKeys  index                   newArray      indexedRow             return  newArray

User · Answer

It is from duplicated question   json           product id   63   product batch   BAtch1   product quantity   50   product price   200   discount   0   net price   20000          product id   67   product batch   Batch2   product quantity   50   product price   200   discount   0   net price   20000         array   json decode  json  true     out   array map function   product      return array merge        price       gt   product  product price         quantity    gt   product  product quantity         array flip array filter array flip  product   function   value        return  value     product price   amp  amp   value     product quantity               array    var dump  out     https   repl it  Piterden Replace-keys-in-array

User · Answer

This should work in most versions of PHP 4   Array map using anonymous functions is not supported below 5 3   Also the foreach examples will throw a warning when using strict PHP error handling   Here is a small multi-dimensional key renaming function  It can also be used to process arrays to have the correct keys for integrity throughout your app  It will not throw any errors when a key does not exist   function multi rename key  amp  array   old keys   new keys        if  is array  array              array         array array     false          return  array            foreach  array as  amp  arr           if  is array  old keys                         foreach  new keys as  k   gt   new key                                 isset  old keys  k      true    old keys  k  NULL                   arr  new key     isset  arr  old keys  k       arr  old keys  k     null                   unset  arr  old keys  k                            else               arr  new keys     isset  arr  old keys      arr  old keys    null               unset  arr  old keys                        return  array      Usage is simple  You can either change a single key like in your example   multi rename key  tags   url    value      or a more complex multikey  multi rename key  tags  array  url   name    array  value   title       It uses similar syntax as preg replace   where the amount of  old keys and  new keys should be the same  However when they are not a blank key is added  This means you can use it to add a sort if schema to your array   Use this all the time  hope it helps

User · Answer

foreach   basearr as  amp  row         row  value      row  url        unset   row  url         unset  row

User · Answer

You could use array map   to do it    tags   array map function  tag        return array           name    gt   tag  name             value    gt   tag  url              tags

[php] How to rename array keys in PHP?

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