Switching values with keys.

[DarkWater]

I know that I should know this, because I feel like there is a function like it, but I can't remember if there is.  Is there a function that takes the values of an array and turns it into keys for that array, if the values are strings?  You know, now that I think about it, that does sound odd.  There might not even be a function that does it.  I'll code one if there isn't.

 

Basically, I need an opposite version of array_keys(). >_>

[mofm]

i think ur after somthing like this ?

<?
foreach($_GET as $key => $value) 
{

	$$key = $value;

}
?>

[DarkWater]

i think ur after somthing like this ?

<?
foreach($_GET as $key => $value) 
{

	$$key = $value;

}
?>

 

Almost.  But I'm going to make sure each string is shorter than a certain # of chars and some other things if I do write a function for it.

[jonsjava]

str_split splits a value into an array.

[DarkWater]

str_split splits a value into an array.

 

Does it take every array value and turn it into a key, and turn the key into the value? >_>  Basically flipping an array.

I don't think so.

[mofm]

its not hard to make the code below a function

 

foreach($_GET as $key => $value) {
	{
	if($value<=10)
		{
		if(is_string($value))
			{
			$$key = $value;
			}

		}

	}
}

[jonsjava]

and you can use

<?php
$number = strlen($value);
if ($number > {
//do something
}
else{
//do something else
}

and about str_split. nope, sry.

[DarkWater]

Guys, I know how to make the function, I just wanted to know if there was one already. xD  I guess not.  Thanks.

[mofm]

well you did post it in the "PHP HELP" section

[DarkWater]

And I needed help with finding out if there was a function that does it, lol.  I'll write one and post it here so people can use it if they need it, and then I'll mark the topic as solved.  Be right back.

[Fadion]

I know u know how to write it, but im posting my solution of swapping keys with values :

 

<?php
$arr = array('me' => 'guiltygear', 'you' => 'darkwater');
$keys = array_keys($arr);
$values = array_values($arr);
$arr = array_combine($values, $keys);
?>

 

[DarkWater]

OH, there is an array_values() function.  That would have helped.  But I finished already. =D

<?php
function flip_array($array_flip, $max_lengthofkey=10) {
//Usage: array flip_array(array $array_flip, scalar $max_lengthofkey)
if ((!is_array($array_flip)) || (!is_scalar($max_lengthofkey))) {
	return false;
}
      	foreach ($array_flip as $k => $v) {
	if (!is_string($v)) {
		continue;
	}
	if (strlen($v) > $max_lengthofkey) {
		$v = substr($v, 0, $max_lengthofkey); 
	}
	$new_array[$v]=$k;
}
return $new_array;
}
$oldarray = array("test"=>"dog", "test2"=>"cat");
$newarray=flip_array($oldarray);
print_r($newarray); //Outputs Array ( [dog] => test [cat] => test2 )
?>