How to update specific key s value in an associative array in PHP

Question

I ve a following associative array named  data  Array        0    gt  Array                        transaction user id    gt  359691e27b23f8ef3f8e1c50315cd506              transaction no    gt  19500912050218              transaction total amount    gt  589 00              transaction date    gt  1335932419              transaction status    gt  cancelled                 1    gt  Array                        transaction user id    gt  9def02e6337b888d6dbe5617a172c18d              transaction no    gt  36010512050819              transaction total amount    gt  79 00              transaction date    gt  1336476696              transaction status    gt  cancelled                 2    gt  Array                        transaction user id    gt  9def02e6337b888d6dbe5617a172c18d              transaction no    gt  19020512050820              transaction total amount    gt  299 00              transaction date    gt  1336476739              transaction status    gt  cancelled                 3    gt  Array                        transaction user id    gt  9def02e6337b888d6dbe5617a172c18d              transaction no    gt  27050512050821              transaction total amount    gt  79 00              transaction date    gt  1336476927              transaction status    gt  cancelled                 4    gt  Array                        transaction user id    gt  8e9050a3646c98342b9ba079fba80982              transaction no    gt  12070512050822              transaction total amount    gt  129 00              transaction date    gt  1336477032              transaction status    gt  cancelled                and I want to convert the value of key  transaction date  into user readable format  i e  mm dd yyyy   For that I written the following code in a function which returns the whole array    foreach  data as  value                         value transaction date  date  d m Y   value transaction date                   return  data    My problem is I m getting the same array without changing the value of  transaction date  for all the array elements  Actually array with updated values for  transaction date  is expected to be returned   Can anyone help me out to resolve this issue  Thanks in advance

User · Answer

PHP array walk   function is specifically for altering array   Try this   array walk    data  function   amp  key          key  transaction date     date  d m Y   key  transaction date

User · Answer

foreach  data as  value         value  transaction date     date  d m Y   value  transaction date       return  data

User · Answer

This a single solution  in where your field is a field that will set and new value is a new value field  that can a function or a single value  foreach   array as  key   gt   item        item  your field      new value       array  key     item      In your case new value will be a date   function

User · Answer

Use array walk recursive function for multi-denominational array   array walk recursive  data  function   amp  v   k         if  k     transaction date              v   date  d m Y   v

User · Answer

Change your foreach to something like this  You are not assigning data back to your return variable  data after performing operation on that    foreach  data as  key   gt   value       data  key   transaction date     date  d m Y   value  transaction date         Codepad DEMO

User · Answer

This will work too   foreach  data as  amp  value       value  transaction date     date  d m Y    value  transaction date         Yay for alternatives

User · Answer

The best approach is using a lambda within  quot array walk quot  native function to make the required changes      array walk  data  function   amp  value   key                if  key     transaction date                        value   date  d m Y    value                           The value is updated in the array as it s passed with as a reference  quot  amp  quot

[php] How to update specific key's value in an associative array in PHP?

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