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PHP count_chars() 函数
tryphp_func_string_count_chars4
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<!DOCTYPE html> <html> <body> <?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>"; } ?> </body> </html>