Ok...maybe I am having a dumb moment here but I am confused as to how to use this code lol
My array that I am wanting to sort is called $phrases...can you show me how to
'plug it into" the above code?
thanks
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PHP - Sort array by string size - Largest to smallest
I need to sort an array by string size....the array has around 8500 elements and each element has multiple strings, seperated by the pipe ( | ) character. Example:
element[0] = word1|word2|word3
element[1] = multiple words set 1|multiple words set 2| multiple words set 3
element[2] = multiple words set 1|multiple words set 2
element[3] = long sentence of words set 1|long sentence set 2
What I need to do is sort the array by the elements with the MOST AMOUNT OF WORDS in each element, largest to smalles.
So inthe above example the sorted array will look like this:
element[0] = long sentence of words set 1|long sentence set 2 (has 6 words max)
element[1] = multiple words set 1|multiple words set 2| multiple words set 3 (has 4 words max)
element[2] = multiple words set 1|multiple words set 2 (has 4 words max)
element[3] = word1|word2|word3 (has 1 word max)
Hopefully that makes sense.....
Please provide the code and not a link to a resource. thanks!
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Answers
Yup I tried that thinking that you messed that part up :) I just did it again to make sure that I did it correctly and when I change the foreach loop to the proper syntax I get this error:
Warning: Wrong parameter count for explode() for this line:
$phrases = explode($string);
and this error:
Warning: Invalid argument supplied for foreach() for this line:
foreach ($phrases as $phrase)
sorry, the explode function will turn a string into an array based on a delimiter
the first explode should be
explode("|", $string) // separates the phrases into it's various phrases delimited by the pipe | character
the second explode shoudl be
explode(" ", $phrase) // separates the phrases into words delimited by a space
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by: mikeadaPosted on 2009-11-03 at 12:15:52ID: 25733062
usort($element, "cmp");
function cmp($ele1, $ele2)
{
$max1 = maxwords($ele1);
$max2 = maxwords($ele2);
if ($max1 == $max2)
return 0;
return ($max1 > $max2) ? -1 : 1;
}
function maxwords($string)
{
$maxwords = 0;
$phrases = explode($string);
foreach ($phrase in $phrases)
{
// split the phrase up into words and count them
$wordcount = count(explode($phrase));
if ($wordcount > $maxwords)
$maxwords = $wordcount;
}
return $maxwords;
}