超越PHP - Exceed PHP: strlen

strlen

(PHP 3, PHP 4 , PHP 5)

strlen -- Get string length

Description

int strlen ( string string)

Returns the length of the given string.

例子 1. A strlen() example

<?php $str = 'abcdef'; echo strlen($str); // 6 $str = ' ab cd '; echo strlen($str); // 7 ?>

See also count(), and mb_strlen().

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strlen

rasmus at php dot net
04-Nov-2000 03:37

This bit of code works just fine in PHP:



$tmp=0;
$s="blah";

while($c=$s[$tmp++]) { echo $c; }




Depending on your warning level you may get a warning when $tmp =
4 because you have gone beyond the end of the string.  If you don't care
about this warning either change your warning level or simply swallow it
using:



  $tmp=0; $s="blah"; 

  while(@$c=$s[$tmp++])
{ echo $c; }



The @ in front of the assignment will swallow any
warnings from that assignment.

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stristr

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Last updated: Fri, 22 Jun 2007