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PHP Discussion Thread
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Jul 26th, 2006

how to manipulate characters in strings

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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...

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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tefflox

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Jul 27th, 2006

Re: how to manipulate characters in strings

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.

Puckdropper

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Posting Pro in Training

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Jul 27th, 2006

Re: how to manipulate characters in strings

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

tefflox

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Jul 27th, 2006

Re: how to manipulate characters in strings

for($i = 0; $str[$i] != ""; $i++) ---works great, thanks! :-)

Last edited by tefflox; Jul 27th, 2006 at 11:24 am.

tefflox

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No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

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