How can I get the current array index in a foreach loop

Question

How do I get the current index in a foreach loop   foreach   arr as  key   gt   val           How do I get the index         How do I get the first element in an associative array

User · Answer

foreach  array as  key  gt  value           do stuff      key is the index of each  array element

User · Answer

i   0  foreach   arr as  key   gt   val      if   i     0           first index          current index is  i     i

User · Answer

well since this is the first google hit for this problem   function mb tell  amp  msg        if count  msg     0            return 0              prev  msg        kv   each  msg       if  prev  msg             end  msg            print r  kv           return   kv 0  1             print r  kv       return   kv 0

User · Answer

key is the index for the current array element  and  val is the value of that array element   The first element has an index of 0  Therefore  to access it  use  arr 0   To get the first element of the array  use this   firstFound   false  foreach  arr as  key  gt  val        if    firstFound          first    val      else         firstFound   true         do whatever you want here       now   first  has the value of the first element in the array

User · Answer

The current index is the value of  key  And for the other question  you can also use   current  arr    to get the first element of any array  assuming that you aren t using the next    prev   or other functions to change the internal pointer of the array

User · Answer

You could get the first element in the array keys   function as well   Or array search   the keys for the  index  of a key   If you are inside a foreach loop  the simple incrementing counter  suggested by kip or cletus  is probably your most efficient method though    lt  php     array   array  test    1    2        keys   array keys  array      var dump  keys 0       int 0       array   array  test   gt  something    test2   gt  something else        keys   array keys  array       var dump array search  test2    keys       int 1          var dump array search  test3    keys       bool false

User · Answer

You can get the index value with this  foreach   arr as  key   gt   val         key    int   key        With the variable  key you can get access to the current array index       You can use  val  key  to

User · Answer

In your sample code  it would just be  key   If you want to know  for example  if this is the first  second  or ith iteration of the loop  this is your only option    i   -1  foreach  arr as  val       i         i is now the index   if  i    0  then this is the first element            Of course  this doesn t mean that  val     arr  i  because the array could be an associative array

User · Answer

based on  fabien-snauwaert s answer but simplified if you do not need the original key   array   array   cat    gt   meow    dog    gt   woof    cow    gt   moo    computer    gt   beep     foreach  array values   array   as  index  gt  value             display the current index    value     echo  index          value          first index     if    index    0             echo   -- This is the first element in the associative array                 last index     if    index    count   array   - 1             echo   -- This is the last element in the associative array             echo   lt br gt

User · Answer

This is the most exhaustive answer so far and gets rid of the need for a  i variable floating around  It is a combo of Kip and Gnarf s answers    array   array   cat    gt   meow    dog    gt   woof    cow    gt   moo    computer    gt   beep     foreach  array keys   array   as  index  gt  key             display the current index   key   value     echo  index          key    array  key           first index     if    index    0             echo   -- This is the first element in the associative array                 last index     if    index    count   array   - 1             echo   -- This is the last element in the associative array             echo   lt br gt        Hope it helps someone

[php] How can I get the current array index in a foreach loop?

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