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how to manipulate characters in strings

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Join Date: Jul 2006

Posts: 174

Reputation: tefflox is an unknown quantity at this point

Solved Threads: 1

tefflox

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Junior Poster

how to manipulate characters in strings

Jul 26th, 2006

i'm unsure if i need to use an array (i'm a newbie to php, the most i've done is make text appear in random color)... anyhow, i want to pass a string to a function that will decrement a color value for each character. here is what i have so far...

 Help with Code Tags 
 PHP Syntax (Toggle Plain Text) 
<?
function red($str) {  
$red = rand(60, 99) 
                  /** first 2 of the six hex code numbers
                    * the other 4 will be light grey (neutral)
                    * so the string will fade or darken
                    * from the first red value 
                    **/
 
for (....) // need help here !
 
echo(....)  // i've got this part figured
}
<?
function red($str) {  
$red = rand(60, 99) 
                  /** first 2 of the six hex code numbers
                    * the other 4 will be light grey (neutral)
                    * so the string will fade or darken
                    * from the first red value 
                    **/

for (....) // need help here !

echo(....)  // i've got this part figured
}

thanks

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Join Date: Jul 2004

Posts: 494

Reputation: Puckdropper is an unknown quantity at this point

Solved Threads: 21

Puckdropper Puckdropper is offline

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Posting Pro in Training

Re: how to manipulate characters in strings

Jul 27th, 2006

for ($i = 0; $i< MAXLOOPS; $i++)

or you could use a NULL string in an array to indicate the end and get this:

while ($string[$i] != "") ($i is the string you're looking at now)

I'm not 100% sure about the code working, but the idea is sound.

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Join Date: Jul 2006

Posts: 174

Reputation: tefflox is an unknown quantity at this point

Solved Threads: 1

tefflox

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Junior Poster

Re: how to manipulate characters in strings

Jul 27th, 2006

thanks, i will work with your code. it looks easy the way you have written it, while the tutorials for php arrays seem really obscure.

tho i did realize it's 100% easier to just make an <img src...> file to do what i had in mind.

but i'm learning :-) thanks