Creating an associative array with strings - php

Question

I read some words from a text file, storing each word as an array element using the file() function. Now I need to sort each word and create an associative array that stores the sorted strings as keys and the original strings as values like so :
$hash_table = array( 'sorted_string' => 'original string' );
I loop through every word read from the file and sort it in ascending order but when it comes to pushing it to the associative array, I am completely lost. Can anyone show me how to create the associative array ?

Answer 1

$a = array('green', 'yellow', 'red');//actual
$b = array('green', 'yellow', 'red');
sort($b); //sorted
$c = array_combine($b, $a);

Answer 2

If I understand your question right, consider this:
$sorted; //sorted array
$original; //original array
foreach($sorted as $key){
$index = 0;
$new_array[$key] = $original[$index++];
}

Answer 3

Here is what you want:
<?php
//create an array with words, similar to what you get with file()
$str = "here is a list of random words that will be sorted";
$array = explode(" ", $str);
//a place to store the result
$result = array();
//check each value
foreach($array as $word) {
//str_split will create an array from a string
$letters = str_split(trim($word));
//sort the letters
sort($letters);
//implode the letters again to a single word
$sorted = implode($letters);
//add to result
$result[$sorted] = $word;
}
//dump
var_dump($result);
//sort on the key
ksort($result);
//dump
var_dump($result);
?>
This will output
//unsorted
array(11) {
["eehr"]=>
string(4) "here"
["is"]=>
string(2) "is"
["a"]=>
string(1) "a"
["ilst"]=>
string(4) "list"
["fo"]=>
string(2) "of"
["admnor"]=>
string(6) "random"
["dorsw"]=>
string(5) "words"
["ahtt"]=>
string(4) "that"
["illw"]=>
string(4) "will"
["be"]=>
string(2) "be"
["deorst"]=>
string(6) "sorted"
}
//sorted on key
array(11) {
["a"]=>
string(1) "a"
["admnor"]=>
string(6) "random"
["ahtt"]=>
string(4) "that"
["be"]=>
string(2) "be"
["deorst"]=>
string(6) "sorted"
["dorsw"]=>
string(5) "words"
["eehr"]=>
string(4) "here"
["fo"]=>
string(2) "of"
["illw"]=>
string(4) "will"
["ilst"]=>
string(4) "list"
["is"]=>
string(2) "is"
}