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Manual: strlen
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strlen

(PHP3 , PHP4 )

strlen -- Get string length

Description

int strlen (string str)

Returns the length of string.


User Contributed Notes: strlen

rattlesnake@UniNova.zzn.com
22-Nov-1999 07:29
Never one to pass a function what it expects, I figured the following might be useful to know: strlen() returns 0 (zero) for a blank string or an undefined variable. If no parameter is given, it generates a Warning.

ryan@audiogalaxy.com
24-Mar-2000 12:42
FYI, strings don't appear to be \0 terminated. You can pack binary data into a string, join it with other binary packed strings, get the correct strlen, etc.

php.net@pinguin.conetix.de
01-May-2000 09:14
Bug or feature? I want to treat a string as an array ("traverse it") like this, and it gets me a warning about "illegal string index" when it reaches the end of the string. Shouldn't the "while" fail there anyway?

<pre>
$tmp=0; $s="blah";
while($c=$s[$tmp++]) { echo $c; }
</pre>

This also spits warnings with "do {..} while(..)".

Bug or feature?



simon@simonzone.com
18-May-2000 02:08
Numbers don't have length as such. But if you are after the length of the decimal expression of a number try this: strlen((string)37337)



webmaster@hedgehogwheels.com
27-Jul-2000 10:57
"how can i get the length of a number?"

strlen(strval($yournumber))

0348373e@teleline.es
02-Aug-2000 06:28
estoy empezando ha hacer un grupo de funciones de string (para fechas y demas) explicadas en castellano. El que quiera puede participar.

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