UNDEFINED OFFSET FOR SORTING WORDS

[booxvid]

This program is to sort words into qwerty order.

 

<?php
//	include 'qwerty.php';

$words = array("one,two,free");
$order = array('q','w','e','r','t','y','u','i','o','p','a','s','d','f','g','h','j','k','l','z','x','c','v','b','n','m');
$key = array();
				$text = "one two free";

				$words = explode(" ",$text);

				for($i=0;$i<count($words);$i++){

					$next_word = $words[$i];
					$fletter_nextword = get_first_letter($next_word);
					$key_nextword =get_key($fletter_nextword,$order);

					$key[$i] = $key_nextword;

				}

				$words_key = array_combine($key, $words);
				ksort($words_key);

				foreach ($words_key as $key => $value){

					echo $value.'</br>';
				}

function get_first_letter($this_word){

	$temp = explode(' ',$this_word);
	return $temp[0];
	}

function get_key($the_word,$order){
	$key="";
	$i=0;

	do{
		if($the_word==$order[$i]){
			$flag = "TRUE";
			$key = $i;
		}
		else{
			$flag = "FALSE";
		}

		$i++;
	}while($flag=="FALSE");


	return $key;
}

?>

 

It says :

Notice: Undefined offset: 26 in C:\xampp\htdocs\OOP_SYSTEM\qwerty sort\sort_qwerty.php on line 48

 

[peipst9lker]

Which line is 48?

[booxvid]

Oh sorry, I've already updated my codes.

 

<?php
//	include 'qwerty.php';

$words = array("one,two,free");
$order = array('q','w','e','r','t','y','u','i','o','p','a','s','d','f','g','h','j','k','l','z','x','c','v','b','n','m');
$key = array();
				$text = "one two free";

				$words = explode(" ",$text);

//					for($i=0;$i<count($words);$i++){
//						
					$next_word = $words[0];
					echo $next_word;
					$temp = array();

					echo $temp[0];
					//$fletter_nextword = get_first_letter($next_word);
//						$key_nextword =get_key($fletter_nextword,$order);
//							
//						$key[0] = $key_nextword;
//						echo $key[0];
//			
//					}

//					$words_key = array_combine($key, $words);
//					ksort($words_key);
//					
//					foreach ($words_key as $key => $value){
//						
//						echo $value.'</br>';
//					}

function get_first_letter($this_word){

	$temp = explode(' ',$this_word);
	return $temp[0];
	}

function get_key($the_word,$order){
	$key="";

	for($i=0;$i<count($order);$i++){
		if($the_word==$order[$i]){		
				$key = $i;
				break;
			}
	}

	return $key;
}

?>

 

my problem right now is how to get the first letter of a string.

[peipst9lker]

Use substr to only get the first character.

function get_first_letter($this_word) {
return substr($this_word, 0, 1);
}

[booxvid]

Thanks! I'm almost done with this sorting work.

function get_key($the_letter,$order){
	$key="";

	for($i=0;$i<count($order);$i++){
		if($the_letter==$order[$i]){		
				$key = $i;
				break;
			}
	}

	return $key;
}

 

got one last question:

 

is my function correct? by when I loop in with the array of qwerty, together the first word that I've got

is this the right way in stopping a for loop?

 

[peipst9lker]

Yes, break is the right way to stop a loop.

The function will return the index of the letter in your querty array - I don't know if that's what you want

But array_search does the exact same thing, consider using that one!