explode true and false string

[KryptoS]

Hello there,

I have to following function:

$aChecked = explode(',', $checked);

if $checked contains something like 'true,false,false,true' it returns an array with the values true and false.

But if $checked only contains e.g. 'true'
It returns an array with the value 1. $aChecked[0] = 1 (in case of 'false' it returns 0).

Am I doing something wrong? Or how can I get also true if I'm only exploding true or false?

The One And Only KryptoS

 

[jpadie]

are you looking to get the string literals 'true' and 'false' returned or have i misunderstood your question?

 

[KryptoS]

Yes I want the string 'true' or 'false' back.

'cause when I've $checked = 'true,false,false' and do an explode. I also get a string true and false back. So I want the same if I have only $check = 'true'



The One And Only KryptoS

 

[jpadie]

hmm. that's difficult to do neatly as boolean true converts to '1' and boolean false to '' on a strval();

i'm surprised by the behaviour that you're seeing though. but anyway, this should work:

print_r(_explode($string));
function _explode($string){
 $array = explode($string);
 foreach ($array as &$val){
   $val = ($val === true) ? 'True' : 'False';
 }
 return $val;
}

 

[KryptoS]

Why does he converts it to 0 and 1 only if I have one value in my string ($checked = "true") and not when I have multiple values in my string ($checked = "true,false,false")?

my code before:
$Checked = "true,false";
$aChecked = explode(',', $Checked);
echo $aChecked[0]; (printed: "true")

$Checked = "true";
$aChecked = explode(',', $Checked);
echo $aChecked[0]; (printed: 1)


I managed to get what I wanted by doing this.

if(strpos($Checked,','))
$aChecked = explode(',', $Checked);
else
$aChecked[0] = $Checked;

this gives me always true or false values in aChecked.

The One And Only KryptoS

 

[jpadie]

my code will work for you.

as to why there is this inconsistent behaviour, i do not know. it sounds like a bug.

 

[AdaHacker]

You shouldn't need to do anything. The default behavior of explode() is exactly what you're looking for.

If delimiter contains a value that is not contained in string , then explode() will return an array containing string .

So explode(',', 'true') should return a one-element array containing the string 'true'.

Are you sure you're using exactly the code you posted? You would get "1" or "0" if you passed explode() a boolean true or false, but if you passed it a string, you should get back the string.

 

[KryptoS]

OK, I'm wrong. It gives back true and false...

What went wrong...

I'm using JSON (Zend). So in my javascript I do:

Ext.Ajax.request(
{
waitMsg: 'Wait...',
url: webroot+module+'/'+controller+'/savevalideren/',
params: {
json : "1",
checked: [check]
},
...

In my php script I had:

$Checked = Zend_Json::decode($this->_request->getParam('checked'));

Json transfer the true/false to 1/0. When it checked has 'true,false,false' json keeps it like that. So I let out the Json::decode and now everything is going fine.

thanks guys!

The One And Only KryptoS