PHP count_chars()函数讲解

<?php $str = "Hello World!"; echo count_chars($str,3); ?>

count_chars( _string,mode_ )

<?php $str = "Hello World!"; echo count_chars($str,4); ?>

<?php $str = "Hello World!"; print_r(count_chars($str,1)); ?>

<?php $str = "PHP is pretty fun!!"; $strArray = count_chars($str,1); foreach ($strArray as $key=>$value) { echo "The character <b>'".chr($key)."'</b> was found $value time(s)<br>"; } ?>