How does one cast a bool to a string? As in true to "true"?

**Pedro Graca** · Jul 17 '05, 03:59 AM

Re: How does one cast a bool to a string? -- ANSWER HERE -- You have to convert from '' (boolean false) to 'false' and from 1 (boolean true) to 'true'. One way to do that is: <?php echo $boolean_variab le : 'true' ? 'false'; ?>

lawrence wrote:[color=blue]
> In the following loop, at the end, the method debugNotes() is printing
> out some notes for me to read, so I can figure out what is going on in
> my script. Where I try to print out the value of the variable $noFile,
> it is print "1" instead of "true". Why does it do this?
>
> The loop is failing to run a second time, for reasons I can not
> fathom. debugNotes tells me that the count of $dirArray is 10, and the
> file hasn't been found yet, so I would expect the loop to keep
> looping.
>
> Why?[/color]

Isn't any of those files you include returning false (or 0, or '')?

<?php
$a = include 'nofile.php';
$b = include 'yesfile.php';
$c = include 'falsefile.php' ;

echo "[$a] [$b] [$c]\n";
?>

where nofile.php does not exist, yesfile.php is
<?php echo 'YES'; ?> and falsefile.php is
<?php echo 'false'; return 0; ?>

The result is:
YESfalse[] [1] []
--
--= my mail box only accepts =--
--= Content-Type: text/plain =--
--= Size below 10001 bytes =--

**Andy Hassall** · Jul 17 '05, 03:59 AM

Re: How does one cast a bool to a string? As in true to "true&quot ;?

On 4 Mar 2004 11:46:06 -0800, lkrubner@geocit ies.com (lawrence) wrote:
[color=blue]
>In the following loop, at the end, the method debugNotes() is printing
>out some notes for me to read, so I can figure out what is going on in
>my script. Where I try to print out the value of the variable $noFile,
>it is print "1" instead of "true". Why does it do this?[/color]

This is Expected Behaviour. See the manual:

PHP: Strings - Manual

http://www.php.net/manual/en/language.types.string.php#language.types.string.casting

Strings

If you're printing debug statements, var_dump is often a good choice. It would
produce 'bool(true)'.

--
Andy Hassall <andy@andyh.co. uk> / Space: disk usage analysis tool
<http://www.andyh.co.uk > / <http://www.andyhsoftwa re.co.uk/space>

**Erik Johnson** · Jul 17 '05, 03:59 AM

Re: How does one cast a bool to a string? As in true to "true&quot ;?

"lawrence" <lkrubner@geoci ties.com> wrote in message
news:da7e68e8.0 403041146.1f806 bf6@posting.goo gle.com...
[color=blue]
> In the following loop, at the end, the method debugNotes() is printing
> out some notes for me to read, so I can figure out what is going on in
> my script. Where I try to print out the value of the variable $noFile,
> it is print "1" instead of "true". Why does it do this?
>
> The loop is failing to run a second time, for reasons I can not
> fathom. debugNotes tells me that the count of $dirArray is 10, and the
> file hasn't been found yet, so I would expect the loop to keep
> looping.
>
> Why?[/color]

You can't fathom why this loop wouldn't run a second time?
Let's cut out the fluff and pare your code down to the functional part:

for ($i=0; $i < count($dirArray ) && $noFile == true; $i++)
{
$noFile = false;

$theFileIsLoade d = @include($tryTh isFile);

if (!$theFileIsLoa ded)
$theFileIsLoade d = @include($someO therFile);

if (!$theFileIsLoa ded)
$theFileIsLoade d = @include($someT hirdFile);

if (!$theFileIsLoa ded)
$noFile = true;
}

Hopefully it is obvious now?

As for your first question, that's just one of PHP little quirks: false is
interpolated into strings as the empty string, true is interpolated as '1'.
Here's a quick little way to convert it to the form you like:

$x = true; # or false, take your pick
print "x = " . ($x ? "true" : "false") . "\n";

HTH,
-ej

[color=blue]
> for ($i=0; $i < count($dirArray ) && $noFile == true; $i++) {
> $noFile = false;
> $dir = $dirArray[$i];
> $tryThisDir = $this->pathToNeededFi les.$dir;
> // 11-10-03 - first we try to find the file using the prefix
> $fileNameToTry = $prefix.$name;
> $tryThisFile = $tryThisDir.$fi leNameToTry;
> $theFileIsLoade d = @include($tryTh isFile);
> if (!$theFileIsLoa ded) {
> $this->debugNotes(" $i loop. In getArrangement( ), in the class
> McControllerFor All, we tried to include $tryThisFile but we did not
> find it.");
> }
> // 11-10-03 - then we try it with ".php" at the end
> if (!$theFileIsLoa ded) {
> $tryThisFile = $tryThisDir.$fi leNameToTry.".p hp";
> $theFileIsLoade d = @include($tryTh isFile);
> $this->debugNotes(" $i loop. In getArrangement( ), in the class
> McControllerFor All, we tried to include $tryThisFile but we did not
> find it.");
> }
> // 11-10-03 - if that fails, then we try to find the file without
> using the prefix.
> if (!$theFileIsLoa ded) {
> $tryThisFile = $tryThisDir.$na me;
> $theFileIsLoade d = @include($tryTh isFile);
> $this->debugNotes(" $i loop. In getArrangement( ), in the class
> McControllerFor All, we tried to include $tryThisFile but we did not
> find it.");
> }
> if (!$theFileIsLoa ded) {
> $tryThisFile = $tryThisFile.". php";
> $theFileIsLoade d = @include($tryTh isFile);
> $this->debugNotes(" $i loop. In getArrangement( ), in the class
> McControllerFor All, we tried to include $tryThisFile but we did not
> find it.");
> }
> if (!$theFileIsLoa ded) {
> $noFile = true;
> $num = count($dirArray );
> $this->debugNotes(" $i loop. In getArrangement( ), in the class
> McControllerFor All, we end $i loop without finding the file we wanted.
> We expect to do a total of $num loops, maximum. Our variable noFile
> should be registered 'true' at this point. It's value is: $noFile .");
> }
> }[/color]

**lawrence** · Jul 17 '05, 04:00 AM

Re: How does one cast a bool to a string? As in true to "true&quot ;?

"Erik Johnson" <ej@just.post.h ere.com> wrote in message[color=blue]
> You can't fathom why this loop wouldn't run a second time?[/color]

I think you misread the code. After all, you're looking at a loop that
has worked correctly for months. When I found the problem, it was not
related to the loop.

As for the example you give, I've looked at it several times and I'm
still not sure what point you're trying to make. The loop that you
depict should run fine. And, in fact, it is running fine.

But I do thank you for trying to help.

[color=blue]
> Let's cut out the fluff and pare your code down to the functional part:
>
> for ($i=0; $i < count($dirArray ) && $noFile == true; $i++)
> {
> $noFile = false;
>
> $theFileIsLoade d = @include($tryTh isFile);
>
> if (!$theFileIsLoa ded)
> $theFileIsLoade d = @include($someO therFile);
>
> if (!$theFileIsLoa ded)
> $theFileIsLoade d = @include($someT hirdFile);
>
> if (!$theFileIsLoa ded)
> $noFile = true;
> }
>
> Hopefully it is obvious now?
>
> As for your first question, that's just one of PHP little quirks: false is
> interpolated into strings as the empty string, true is interpolated as '1'.
> Here's a quick little way to convert it to the form you like:
>
> $x = true; # or false, take your pick
> print "x = " . ($x ? "true" : "false") . "\n";
>
> HTH,
> -ej
>
>
>
>[color=green]
> > for ($i=0; $i < count($dirArray ) && $noFile == true; $i++) {
> > $noFile = false;
> > $dir = $dirArray[$i];
> > $tryThisDir = $this->pathToNeededFi les.$dir;
> > // 11-10-03 - first we try to find the file using the prefix
> > $fileNameToTry = $prefix.$name;
> > $tryThisFile = $tryThisDir.$fi leNameToTry;
> > $theFileIsLoade d = @include($tryTh isFile);
> > if (!$theFileIsLoa ded) {
> > $this->debugNotes(" $i loop. In getArrangement( ), in the class
> > McControllerFor All, we tried to include $tryThisFile but we did not
> > find it.");
> > }
> > // 11-10-03 - then we try it with ".php" at the end
> > if (!$theFileIsLoa ded) {
> > $tryThisFile = $tryThisDir.$fi leNameToTry.".p hp";
> > $theFileIsLoade d = @include($tryTh isFile);
> > $this->debugNotes(" $i loop. In getArrangement( ), in the class
> > McControllerFor All, we tried to include $tryThisFile but we did not
> > find it.");
> > }
> > // 11-10-03 - if that fails, then we try to find the file without
> > using the prefix.
> > if (!$theFileIsLoa ded) {
> > $tryThisFile = $tryThisDir.$na me;
> > $theFileIsLoade d = @include($tryTh isFile);
> > $this->debugNotes(" $i loop. In getArrangement( ), in the class
> > McControllerFor All, we tried to include $tryThisFile but we did not
> > find it.");
> > }
> > if (!$theFileIsLoa ded) {
> > $tryThisFile = $tryThisFile.". php";
> > $theFileIsLoade d = @include($tryTh isFile);
> > $this->debugNotes(" $i loop. In getArrangement( ), in the class
> > McControllerFor All, we tried to include $tryThisFile but we did not
> > find it.");
> > }
> > if (!$theFileIsLoa ded) {
> > $noFile = true;
> > $num = count($dirArray );
> > $this->debugNotes(" $i loop. In getArrangement( ), in the class
> > McControllerFor All, we end $i loop without finding the file we wanted.
> > We expect to do a total of $num loops, maximum. Our variable noFile
> > should be registered 'true' at this point. It's value is: $noFile .");
> > }
> > }[/color][/color]

**lawrence** · Jul 17 '05, 04:00 AM

Re: How does one cast a bool to a string? -- ANSWER HERE -- You have to convert from '' (boolean false) to 'false' and from 1 (boolean true) to 'true'. One way to do that is: <?php echo $boolean_variab le : 'true' ? 'false'; ?>

Pedro Graca <hexkid@hotpop. com> wrote in message news:<c2828v$1q 6vga$1@ID-203069.news.uni-berlin.de>...[color=blue]
> <?php
> $a = include 'nofile.php';
> $b = include 'yesfile.php';
> $c = include 'falsefile.php' ;
>
> echo "[$a] [$b] [$c]\n";
> ?>
>
> where nofile.php does not exist, yesfile.php is
> <?php echo 'YES'; ?> and falsefile.php is
> <?php echo 'false'; return 0; ?>
>
>
> The result is:
> YESfalse[] [1] [][/color]

Thanks much for this answer. I take it there is nothing like:

string $theYear = string($theYear AsNumber);

???

**Pedro Graca** · Jul 17 '05, 04:01 AM

Re: How does one cast a bool to a string? -- ANSWER HERE -- You have to convert from '' (boolean false) to 'false' and from 1 (boolean true) to 'true'. One way to do that is: <?php echo $boolean_variab le : 'true' ? 'false'; ?>

lawrence wrote:[color=blue]
> I take it there is nothing like:
>
> string $theYear = string($theYear AsNumber);[/color]

The only problematic 'thing' to transform to string is the value

false

All other 'things' do so more or less autogically.
If you want to print a boolean value try this function:

<?php
function bool2string($x) {
return ($x) ? 'true': 'false';
}
?>

then instead of
echo $boolean;

use the function
echo bool2string($bo olean);
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--= Content-Type: text/plain =--
--= Size below 10001 bytes =--

**lawrence** · Jul 17 '05, 04:03 AM

Re: How does one cast a bool to a string? As in true to "true&quot ;?

function setActive($stat e=5) {
if (is_bool($state )) {
$this->active = $state;
} else {
$this->resultsObjec t->addToErrorResu lts("In setActive(), in the
class McFilterData, the programmer tried to set the active level for
the filter object that protects everyone's privacy. This method
expects to be handed a boolean, that is, true or false, but instead we
got this: $state");
}
}

$f->setActive(); will trip the error message, yes? I hope so.

What about this:

$level = "true";
$f->setActive($lev el);

Does PHP convert the string to a bool automatically? Can I stop PHP
from doing these kinds of conversions, when I need for it to stop?

**lawrence** · Jul 17 '05, 04:04 AM

Re: How does one cast a bool to a string? -- ANSWER HERE -- You have to convert from '' (boolean false) to 'false' and from 1 (boolean true) to 'true'. One way to do that is: <?php echo $boolean_variab le : 'true' ? 'false'; ?>

Pedro Graca <hexkid@hotpop. com> wrote in message news:<c2dl1g$1r td7i$1@ID-203069.news.uni-berlin.de>...[color=blue]
> lawrence wrote:[color=green]
> > I take it there is nothing like:
> >
> > string $theYear = string($theYear AsNumber);[/color]
>
> The only problematic 'thing' to transform to string is the value
>
> false
>
> All other 'things' do so more or less autogically.[/color]

Thanks. I realize now what I wanted was settype().

$answer = "true";
$answer = settype($answer , "boolean");

**lawrence** · Jul 17 '05, 04:04 AM

Re: How does one cast a bool to a string? As in true to "true&quot ;?

Okay, I found this page, which explains casting in PHP.

http://us4.php.net/manual/en/language.types.type-juggling.php#language.types.typecasting

How does one cast a bool to a string? As in true to "true"?

How does one cast a bool to a string? As in true to "true"?

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