PHP foreach() loop - php

Question

$string = "The complete archive of The New York Times can now be searched from NYTimes.com " //the actual input is unknown, it would be read from textarea
$size = the longest word length from the string
I assigned and initialized array in for loop, for example array1, array2 ....arrayN, here is how i did
for ($i = 1; $i <= $size; $i++) {
${"array" . $i} = array();
}
so the $string would be divided in the length of the word
$array1 = [""];
$array2 = ["of", "be", ...]
$array3 = ["the", "can", "now", ...] and so on
So, my question is how to assign in simple for loop or foreach loop $string value to $array1, $array2, $array3 ....., since the input text or the size of the longest word is unknown

Answer 1

I'd probably start with $words = explode(' ', $string)
then sort the string by word length
usort($words, function($word1, $word2) {
if (strlen($word1) == strlen($word2)) {
return 0;
}
return (strlen($word1) < strlen($word2)) ? -1 : 1;
});
$longestWordSize = strlen(last($words));
Loop over the words and place in their respective buckets.
Rather than separate variables for each length array, you should consider something like
$sortedWords = array(
1 => array('a', 'I'),
2 => array('to', 'be', 'or', 'is'),
3 => array('not', 'the'),
);
by looping over the words you don't need to know the maximum word length.
The final solution is as simple as
foreach ($words as $word) {
$wordLength = strlen($word);
$sortedWords[ $wordLength ][] = $word;
}

Answer 2

You could use something like this:
$words = explode(" ", $string);
foreach ($words as $w) {
array_push(${"array" . strlen($w)}, $w);
}
This splits up $string into an array of $words and then evaluates each word for length and pushes that word to the appropriate array.

Answer 3

you can use explode().
$string = "The complete archive of The New York Times can now be searched from NYTimes.com " ;
$arr=explode(" ",$string);
$count=count($arr);
$big=0;
for ($i = 0; $i < $count; $i++) {
$p=strlen($arr[$i]);
if($big<$p){ $big_val=$arr[$i]; $big=$p;}
}
echo $big_val;

Answer 4

Just use the word length as the index and append [] each word:
foreach(explode(' ', $string) as $word) {
$array[strlen($word)][] = $word;
}
To remove duplicates $array = array_map('array_unique', $array);.
Yields:
Array
(
[3] => Array
(
[0] => The
[2] => New
[3] => can
[4] => now
)
[8] => Array
(
[0] => complete
[1] => searched
)
[7] => Array
(
[0] => archive
)
[2] => Array
(
[0] => of
[1] => be
)
[4] => Array
(
[0] => York
)
[5] => Array
(
[0] => Times
)
)
If you want to re-index the main array use array_values() and to re-index the subarrays use array_map() with array_values().