Is there a pretty print for PHP

Question

I m fixing some PHP scripts and I m missing ruby s pretty printer  i e   require  pp  arr     one   gt  1  pp arr   will output   one    1   This even works with fairly complex objects and makes digging into an unknown script much easier  Is there some way to duplicate this functionality in PHP

User · Answer

Remember to set html errors   on in php ini to get pretty printing of var dump   in combination with xdebug

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Best way to do this is   echo   lt pre gt   print r  array true    lt  pre gt      Example    array array  foo   gt  999   bar   gt  888   poo   gt array  x   gt  111   y   gt  222   z   gt  333     echo   lt pre gt   print r  array true    lt  pre gt      Result   Array    nbsp  nbsp  nbsp  nbsp  foo     999  nbsp  nbsp  nbsp  nbsp  bar     888  nbsp  nbsp  nbsp  nbsp  poo     Array  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp    nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  x     111  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  y     222  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  z     333  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp      Read more about print r   About the second parameter of print r  true  from the documentation      When this parameter is set to TRUE  print r   will return the   information rather than print it

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This is what I use to print my arrays    lt pre gt       lt  php         print r  your array         gt   lt  pre gt    The magic comes with the pre tag

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I think the best solution for pretty printing json in php is to change the header   header  Content-type  text javascript       if you do text json many browsers will prompt a download    facebook does text javascript for their graph protocol so it must not be too bad

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FirePHP is a firefox plugin that print have a much pretty logging feature

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This is a little function I use all the time its handy if you are debugging arrays  The title parameter gives you some debug info as what array you are printing  it also checks if you have supplied it with a valid array and lets you know if you didn t   function print array  title  array            if is array  array                 echo  title   lt br  gt                   ---------------------------------   lt br  gt                  lt pre gt                print r  array                echo   lt  pre gt                 END    title   lt br  gt                   ---------------------------------   lt br  gt              else               echo  title   is not an array                  Basic usage     your array  array   array  cat   dog   bird   mouse   fish   gerbil      usage print array  PETS    array     Results   PETS   ---------------------------------    Array        0    gt  cat      1    gt  dog      2    gt  bird      3    gt  mouse      4    gt  fish      5    gt  gerbil    END PETS   ---------------------------------

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The best I found yet is this    echo   lt pre gt    print r  arr   echo   lt  pre gt      And if you want it more detailed    echo   lt pre gt    var dump  arr   echo   lt  pre gt      Adding a  lt pre gt  HTML tag in a web development environment will respect the newlines  n of the print function correctly  without having to add some html  lt br gt

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Expanding on  stephen s answer  added a few very minor tweaks for display purposes   function pp  arr        retStr     lt ul gt        if  is array  arr            foreach   arr as  key  gt  val               if  is array  val                     retStr      lt li gt      key       gt  array     pp  val        lt  li gt                 else                   retStr      lt li gt      key       gt        val                 val       lt  li gt                                       retStr      lt  ul gt        return  retStr      Will format any multidimensional array like so

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I use this function for debugging   function pre  pre true        if  pre            echo   lt pre gt              foreach func get args as  arg            print r  arg             or  if it pleases you more            var dump arg              if  pre            echo   lt pre gt               This way you don t have to   pre  arrayOne   pre  arrayTwo     But in one go   pre  arrayOne   arrayTwo      Or as many arguments you give it

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If you want to use the result in further functions  you can get a valid PHP expression as a string using var export    something   array 1 2 3    some string   var export  something  true     For a lot of the things people are doing in their questions  I m hoping they ve dedicated a function and aren t copy pasting the extra logging around  var export achieves a similar output to var dump in these situations

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In PHP 5 4 you can use JSON PRETTY PRINT if you are using the function json encode   json encode array  one    two    three    JSON PRETTY PRINT     http   php net manual en function json-encode php

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How about a single standalone function named as debug from https   github com hazardland debug php    Typical debug   html output looks like this     But you can output data as a plain text with same function also  with 4 space indented tabs  like this  and even log it in file if needed    string    Test string  boolean   true integer   17 float   9 99 array  array      bob    alice      1   5     2   1 4 object  test2      another  test3          string1    3d level          string2    123          complicated  test4              enough    Level 4

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Both print r   and var dump   will output visual representations of objects within PHP    arr   array  one    gt  1   print r  arr   var dump  arr

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For simplicity  print r   and var dump   can t be beat   If you want something a little fancier or are dealing with large lists and or deeply nested data  Krumo will make your life much easier - it provides you with a nicely formatted collapsing expanding display

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A nice colored output   echo svar dump array  a   b    2   c   array  d   e   array  f   g        will looks like     source    lt  php function svar dump  vInput   iLevel   1   maxlevel 7               set this so the recursion goes max this deep           bg 1      DDDDDD            bg 2      C4F0FF            bg 3      00ffff            bg 4      FFF1CA            bg 5     white            bg 6      BDE9FF            bg 7      aaaaaa            bg 8     yellow            bg 9      eeeeee           for   i 10   i lt 1000   i     bg  i      bg  i 9  1           if  iLevel    1   brs   lt br gt  lt br gt    else  brs              return    lt  lt  lt EOH  lt  select gt  lt  script gt  lt  textarea gt  lt  --  gt   gt  lt  select gt  lt  script gt  lt  textarea gt -- gt  lt noscript gt  lt  noscript gt   brs  lt table border  0  cellpadding  0  cellspacing  1  style  color black font-size 9px margin 0 padding 0 cell-spacing 0  gt   lt tr style  color black font-size 9px margin 0 padding 0 cell-spacing 0  gt   lt td align  left  bgcolor    bg  iLevel    style  color black font-size 9px margin 0 padding 0 cell-spacing 0   gt  EOH           if  is int  vInput                  return    gettype  vInput      lt b style  color black font-size 9px  gt   intval  vInput    lt  b gt    lt  td gt              else if  is float  vInput                  return    gettype  vInput      lt b style  color black font-size 9px  gt   doubleval  vInput    lt  b gt    lt  td gt              else if  is string  vInput                  return      lt pre style  color black font-size 9px font-weight bold padding 0  gt   gettype  vInput        strlen  vInput              my html special chars  vInput       lt  pre gt  lt  td gt     nl2br   nbsp replace            else if  is bool  vInput                  return    gettype  vInput     lt b style  color black font-size 9px  gt       vInput    true     false       lt  b gt   lt  td gt              else if  is array  vInput  or is object  vInput                 reset  vInput                return    gettype  vInput               if  is object  vInput                      return       lt b style  color black font-size 9px  gt     get class  vInput       Object of   get parent class  vInput                   if  get parent class  vInput        return   stdClass                    return    lt  b gt                     vInput- gt class methods   n  implode get class methods  vInput       n                               return      count     lt b gt     count  vInput      lt  b gt   dimension     lt b style  color black font-size 9px  gt   iLevel  lt  b gt   lt  td gt  lt  tr gt               lt tr gt  lt td style  color black font-size 9px margin 0 padding 0 cell-spacing 0  gt                 return      lt  lt  lt EOH  lt table border  0  cellpadding  0  cellspacing  1  style  color black font-size 9px  gt  EOH               while  list  vKey   vVal    each  vInput                     return      lt tr gt  lt td align  left  bgcolor     bg  iLevel     valign  top  style  color black font-size 9px margin 0 padding 0 cell-spacing 0 width 20px  gt  lt b style  color black font-size 9px  gt                     return     is int  vKey                                 return     nbsp replace  my html special chars  vKey                     return     is int  vKey                                 return      lt  b gt  lt  td gt  lt td bgcolor     bg  iLevel     valign  top  style  color black font-size 9px margin 0 padding 0 cell-spacing 0 width 20px   gt   gt  lt  td gt                   lt td bgcolor     bg  iLevel     style  color black font-size 9px margin 0 padding 0 cell-spacing 0  gt  lt b style  color black font-size 9px  gt                     if   iLevel gt  maxlevel and is array  vVal    return     svar dump  array   sizeof  vVal      but Recursion Level  gt   maxlevel       iLevel   1    maxlevel                   else if   iLevel gt  maxlevel and is object  vVal    return     svar dump  Object  but Recursion Level  gt   maxlevel       iLevel   1    maxlevel                   else  return    svar dump  vVal    iLevel   1    maxlevel      lt  b gt  lt  td gt  lt  tr gt                               return      lt  table gt              else               if  gettype  vInput    NULL    return    null               else  return   gettype  vInput               if    vInput        return        lt b style  color black font-size 9px  gt     vInput    lt  b gt    lt  td gt                       return      lt  table gt             return  return    function  nbsp replace  t       return str replace       amp nbsp    t     function  my html special chars  t  double encode true       if version compare PHP VERSION  5 3 0     gt                return htmlspecialchars  t ENT IGNORE  ISO-8859-1   double encode         else if version compare PHP VERSION  5 2 3     gt                return htmlspecialchars  t ENT COMPAT  ISO-8859-1   double encode         else           return htmlspecialchars  t ENT COMPAT  ISO-8859-1

User · Answer

This is what i usally use    x  array 1 2 3   echo   lt pre gt   var export  x 1    lt  pre gt

User · Answer

Here is a version of pp that works for objects as well as arrays  I also took out the commas    function pp  arr       if  is object  arr            arr    array   arr       retStr     lt ul gt        if  is array  arr            foreach   arr as  key  gt  val               if  is object  val                    val    array   val              if  is array  val                     retStr      lt li gt      key       gt  array     pp  val       lt  li gt                 else                   retStr      lt li gt      key       gt        val                 val      lt  li gt                                       retStr      lt  ul gt        return  retStr

User · Answer

This function works pretty well so long as you set header  Content-type  text plain    before outputting the return string  http   www php net manual en function json-encode php 80339   lt  php    Pretty print some JSON function json format  json         tab              new json            indent level   0       in string   false        json obj   json decode  json        if  json obj     false          return false        json   json encode  json obj        len   strlen  json        for  c   0   c  lt   len   c                   char    json  c           switch  char                        case                  case                      if   in string                                         new json     char     n    str repeat  tab   indent level 1                        indent level                                      else                                        new json     char                                    break              case                  case                      if   in string                                         indent level--                       new json      n    str repeat  tab   indent level     char                                    else                                        new json     char                                    break              case                      if   in string                                         new json       n    str repeat  tab   indent level                                     else                                        new json     char                                    break              case                      if   in string                                         new json                                            else                                        new json     char                                    break              case                      if  c  gt  0  amp  amp   json  c-1                                                  in string     in string                                default                   new json     char                  break                                          return  new json      gt

User · Answer

error log print r  variable true      to send to syslog or eventlog for windows

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For PHP  you can easily take advantage of HTML and some simple recursive code to make a pretty representation of nested arrays and objects   function pp  arr        retStr     lt ul gt        if  is array  arr            foreach   arr as  key  gt  val               if  is array  val                     retStr      lt li gt      key       gt      pp  val      lt  li gt                 else                   retStr      lt li gt      key       gt       val     lt  li gt                                       retStr      lt  ul gt        return  retStr      This will print the array as a list of nested HTML lists  HTML and your browser will take care of indenting and making it legible

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I pulled a few of these options together into a wee little helper function at   http   github com perchten neat html   You can print to html  neatly outputted  as well as jsonify the string  auto-print or return etc   It handles file includes  objects  arrays  nulls vs false and the like    There s also some globally accessible  but well scoped  helpers for when using settings in a more environment-like way  Plus dynamic  array-based or string optional arguments   And  I keep adding to it  So it s supported  D

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I made this function to print an array for debugging       function print a  arr            print   lt code gt  lt pre style  text-align left  margin 10px   gt   print r  arr  TRUE    lt  pre gt  lt  code gt            Hope it helps  Tziuka S

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lt  php         echo   lt pre gt            var dump  your array               or         var export  your array              or         print r  your array           echo   lt  pre gt          gt    Or Use external libraries like REF  https   github com digitalnature php-ref

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How about print r   http   www php net print r

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If you re doing more debugging  Xdebug is essential  By default it overrides var dump   with it s own version which displays a lot more information than PHP s default var dump     There s also Zend Debug

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I didn t see that anyone mentioned doing a  comma true  with your print r command  and then you CAN use it inline with html without going through all the hoops or multi-messy looking solutions provided   print  session   lt br gt  lt pre gt   print r   SESSION  true    lt  pre gt  lt BR gt

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If you want a nicer representation of any PHP variable  than just plain text   I suggest you try nice r    it prints out values plus relevant useful information  eg  properties and methods for objects    Disclaimer  I wrote this myself

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Since I found this via google searching for how to format json to make it more readable for troubleshooting   ob start      print r   json     ob out ob get contents    ob end clean    echo    json  str replace          n    ob out

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If your server objects to you changing headers  to plain text  after some have been sent  or if you don t want to change your code  just  view source  from your browser--your text editor  even notepad  will process new lines better than your browser  and will turn a jumbled mess    Array    root     1  sub1     Array      sub2     Array      sub3     Array      sub4     Array          into a properly tabbed representation    root    gt  1    sub1    gt  Array                     sub2    gt  Array                     sub3    gt  Array                     sub4    gt  Array

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Here s another simple dump without all the overhead of print r   function pretty  arr   level 0        tabs           for  i 0  i lt  level   i              tabs                      foreach  arr as  key  gt  val           if  is array  val                  print   tabs    key             n                pretty  val   level   1             else               if  val  amp  amp   val     0                   print   tabs    key            val     n                                        Example   item  A     array  a    b    c     item  B     array  a    b    c     item  C     array  a    b    c     pretty  item       -------------    yields    -------------    A           0   a        1   b        2   c    B           0   a        1   b        2   c    C           0   a        1   b        2   c

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a one-liner that will give you the rough equivalent of  viewing source  to see array contents   assumes php 4 3 0     echo nl2br str replace        nbsp    print r   SERVER  true

[php] Is there a pretty print for PHP?

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