How do I create a comma-separated list from an array in PHP

Question

I know how to loop through items of an array using foreach and append a comma  but it s always a pain having to take off the final comma  Is there an easy PHP way of doing it    fruit   array  apple    banana    pear    grape      Ultimately I want   result    apple  banana  pear  grape

User · Answer

letters   array  a    b    c    d    e    f    g       this array can n no  of values  result   substr implode        letters   0   echo  result   output-   a b c d e f g

User · Answer

A functional solution would go like this    fruit   array  apple    banana    pear    grape     sep          array reduce       fruits      function  fruitsStr   fruit  use   sep            return          fruitsStr     fruit    fruitsStr    sep    fruit

User · Answer

Similar to Lloyd s answer  but works with any size array    missing   array     missing      name    missing      zipcode    missing      phone    if  is array  missing   amp  amp  count  missing   gt  0                          result                    total   count  missing  - 1              for  i   0   i  lt    total   i                                 if  i     total  amp  amp   total  gt  0                      result     and                    result     missing  i                  if  i  lt   total                   result                                     echo  You need to provide your    result                     Echos  You need to provide your name  zipcode  and phone

User · Answer

If doing quoted answers  you can do   commaList       implode             fruit          the above assumes that fruit is non-null  If you don t want to make that assumption you can use an if-then-else statement or ternary      operator

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Result with and in the end    titleString   array  apple    banana    pear    grape     totalTitles   count  titleString   if   totalTitles gt 1         titleString   implode       array slice  titleString  0   totalTitles-1       and     end  titleString     else        titleString   implode        titleString      echo  titleString     apple  banana  pear and grape

User · Answer

This is how I ve been doing it    arr   array 1 2 3 4 5 6 7 8 9     string   rtrim implode       arr          echo  string    Output   1 2 3 4 5 6 7 8 9   Live Demo  http   ideone com EWK1XR  EDIT  Per  joseantgv s comment  you should be able to remove rtrim   from the above example  I e    string   implode       arr

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Follow this one    teacher id                for   i   0   i  lt  count  data  teacher id      i                    teacher id     data  teacher id    i                           teacher id   rtrim  teacher id                echo  teacher id  exit

User · Answer

I prefer to use an IF statement in the FOR loop that checks to make sure the current iteration isn t the last value in the array   If not  add a comma   fruit   array  apple    banana    pear    grape     for  i   0   i  lt  count  fruit    i         echo   fruit  i        if  i  lt   count  fruit  -1          echo

User · Answer

Sometimes you don t even need php for this in certain instances  List items each are in their own generic tag on render for example  You can always add commas to all elements but last-child via css if they are separate elements after being rendered from the script    I use this a lot in backbone apps actually to trim some arbitrary code fat    likers a not  last-child  after   content           Basically looks at the element  targets all except it s last element  and after each item it adds a comma  Just an alternative way to not have to use script at all if the case applies

User · Answer

fruit   array  apple    banana    pear    grape         commasaprated   implode        fruit

User · Answer

Another way could be like this    letters   array  a    b    c    d    e    f    g      result   substr implode        letters   0  -3     Output of  result is a nicely formatted comma-separated list   a  b  c  d  e  f  g

User · Answer

You want to use implode for this   ie   commaList   implode        fruit      There is a way to append commas without having a trailing one  You d want to do this if you have to do some other manipulation at the same time  For example  maybe you want to quote each fruit and then separate them all by commas    prefix    fruitList       foreach   fruits as  fruit         fruitList     prefix          fruit             prefix             Also  if you just do it the  normal  way of appending a comma after each item  like it sounds you were doing before   and you need to trim the last one off  just do  list   rtrim  list         I see a lot of people unnecessarily mucking around with substr in this situation

[php] How do I create a comma-separated list from an array in PHP?

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