php3 workaround for array_count_values() ?

[firepages]

Hi all,

I have just finished a small job only to realise that the client has PHP3 not 4! running, everything works except

array_count_values() - which is PHP4 only, I am certain I saw somewhere here a php version of this - ie a script which does the same job, I have searched but can not find it.. anybody?

I guess I can work it out but agggghhh my head hurts , I basically need to return an array that holds the values and frequency of another array.

[freakysid]

It is a piece of cake to cut your own function to do this:

function array_count_values ($array) {
   $countValues = array();
   while( list($key, $val) = each($array) ) {
      ++$countValues[$val];
   }
   return $countValues;
} 

Note I was going to use the conditional foreach to loop through the array but checked that it was php3 which it is not.

[firepages]

Thanks Freakysid but that does not work for me (unless I implemented it incorrectly?), I need an array that includes the array value and the number of times it occurs, I have gotten around it using this.

function my_count_values($temp){global $thisname;
$rets=0;
while(list($key,$var)=each($thisname)){
if ($temp==$var){$rets++;}}
return $rets;
}

while(list($key,$var)=each($althisname)){
$rets=my_count_values($var);
if($rets>1){$temparray[$var]=1;}
reset($thisname);
}

& while it works it also sucks - if you have an array with 400 values (which I do) this checks each value (400) 400 times!

This application is unlikely to ever have to cope with more than that ,but I hate code which I know is innefficient.

Cheers.

note that $thisname and $althisname are copies of each other

[freakysid]

Test Code:

<?php

function my_array_count_values($array) {
   $countVals = array();
   while(list($key, $val) = each($array)) {
      $countVals[$val]++;
   }
   return $countVals;
}

$values = array("hat", "pipe", "trout", "fig", "pipe", "hat", "aardvark",
              "moustache", "pipe", "dog", "pipe", "fig", "fig");

$frequencies = my_array_count_values($values);
while(list($key, $val) = each($frequencies)) {
   echo "$key $val <br>";
}

?>

Results:

hat 2
pipe 4
trout 1
fig 3
aardvark 1
moustache 1
dog 1