Illegal string offset Warning PHP

Question

I get a strange PHP error after updating my php version to 5 4 0-3   I have this array   Array        host    gt  127 0 0 1      port    gt  11211     When I try to access it like this I get strange warnings   print  memcachedConfig  host     print  memcachedConfig  port       Warning  Illegal string offset  host  in       Warning  Illegal string offset  port  in       I really don t want to just edit my php ini and re-set the error level

User · Accepted Answer

Please try this way     I have tested this code     It works       memcachedConfig   array  host    gt   127 0 0 1   port    gt   11211    print r  memcachedConfig  host

User · Answer

TL DR You re trying to access a string as if it were an array  with a key that s a string  string will not understand that  In code we can see the problem   quot hello quot   quot hello quot       PHP Warning   Illegal string offset  hello  in php shell code on line 1   quot hello quot  0      No errors   array  quot hello quot    gt   quot val quot    quot hello quot       No errors  This is  probably  what you wanted    In depth Let s see that error   Warning  Illegal string offset  port  in      What does it say  It says we re trying to use the string  port  as an offset for a string  Like this   a string    quot string quot       This is ok  echo  a string 0      s echo  a string 1      t echo  a string 2      r               Not good  echo  a string  port          Warning  Illegal string offset  port  in      What causes this  For some reason you expected an array  but you have a string  Just a mix-up  Maybe your variable was changed  maybe it never was an array  it s really not important  What can be done  If we know we should have an array  we should do some basic debugging to determine why we don t have an array  If we don t know if we ll have an array or string  things become a bit trickier  What we can do is all sorts of checking to ensure we don t have notices  warnings or errors with things like is array and isset or array key exists   a string    quot string quot    an array   array  port    gt   the port     if  is array  a string   amp  amp  isset  a string  port              No problem  we ll never get here      echo  a string  port       if  is array  an array   amp  amp  isset  an array  port              Ok      echo  an array  port       the port    if  is array  an array   amp  amp  isset  an array  unset key              No problem again  we won t enter      echo  an array  unset key           Similar  but with array key exists if  is array  an array   amp  amp  array key exists  port    an array            Ok      echo  an array  port       the port    There are some subtle differences between isset and array key exists  For example  if the value of  array  key   is null  isset returns false  array key exists will just check that  well  the key exists

User · Answer

There are a lot of great answers here - but I found my issue was quite a bit more simple   I was trying to run the following command    x  name        j  name      and I was getting this illegal string error on  x  name   because I hadn t defined the array first   So I put the following line of code in before trying to assign things to  x      x   array      and it worked

User · Answer

For PHP    Setup Array like so  memcachedConfig   array     host    gt   127 0 0 1      port    gt   11211        Always a good practice to check if empty  if isset  memcachedConfig  host     amp  amp  isset  memcachedConfig  port             Some codes      print r   memcachedConfig  host         print r   memcachedConfig  port          Just make sure to check that the value returning is not empty  So this example was for PHP so find out how to check if an array is empty in other languages

User · Answer

It s an old one but in case someone can benefit from this   You will also get this error if your array is empty    In my case I had    buyers array   array     buyers array   tep get buyers info  this buyer id      returns an array     echo  buyers array  firstname            buyers array  lastname       which I changed to    buyers array   array     buyers array   tep get buyers info  this buyer id      returns an array     if is array  buyers array        echo  buyers array  firstname            buyers array  lastname       else      echo  Buyers id      this buyer id     not found

User · Answer

A little bit late to the question  but for others who are searching  I got this error by initializing with a wrong value  type     varName        varName  x      test      causes  Illegal string offset   The right way is     varName   array      varName  x      test      works

User · Answer

As from PHP 5 4 we need to pass the same datatype value that a function expects  For example   function testimonial  id      This function expects  id as an integer   When invoking this function  if a string value is provided like this    id    array  id        id is of string type testimonial  id      illegal offset warning   This will generate an illegal offset warning because of datatype mismatch  In order to solve this  you can use settype    id   settype  array  id    integer        id now contains an integer instead of a string testimonial  id      now running smoothly

User · Answer

i think the only reason for this message is because target Array is actually an array like string etc  JSON -    host    127 0 0 1    variable

User · Answer

Before to check the array  do this   if  is array  memcachedConfig         memcachedConfig   array

User · Answer

I solved this problem by using trim   function  the issue was with space   so lets try   unit size         please declare the variable type   unit size   exolode  x    unit size    width    trim   unit size 1      height   trim   unit size 2       I hope this will help you

User · Answer

just use    memcachedConfig   array      before   print  memcachedConfig  host     print  memcachedConfig  port       Warning  Illegal string offset  host  in       Warning  Illegal string offset  port  in        this is because you never define what is  memcachedConfig  so by default are treated by string not arrays

User · Answer

It works to me   Testing Code of mine    var2  data     array   a   gt  21   b   gt  32   c   gt  55   d   gt  66   e   gt  77    foreach  var2 as  result           test    result  c      print r  test     Output  55  Check it guys  Thanks

User · Answer

Just incase it helps anyone  I was getting this error because I forgot to unserialize a serialized array  That s definitely something I would check if it applies to your case

User · Answer

In my case  I solved it when I changed in function that does sql query after  return json encode  array   then  return  array

User · Answer

The error Illegal string offset  whatever  in    generally means  you re trying to use a string as a full array   That is actually possible since strings are able to be treated as arrays of single characters in php   So you re thinking the  var is an array with a key  but it s just a string with standard numeric keys  for example    fruit counts   array  apples   gt 2   oranges   gt 5   pears   gt 0   echo  fruit counts  oranges       echoes 5  fruit counts    an unexpected string assignment   echo  fruit counts  oranges       causes illegal string offset error   You can see this in action here  http   ideone com fMhmkR  For those who come to this question trying to translate the vagueness of the error into something to do about it  as I was

User · Answer

In my case i change  mysql fetch assoc to mysql fetch array and solve  It takes 3 days to solve  -  and the other versions of my proyect run with fetch assoc

[php] Illegal string offset Warning PHP

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