还有大学开设PHP的吗?例子 1. count_chars() example<?php$data = "Two Ts and one F.";$result = count_chars($data, 0);for ($i=0; $i < count($result); $i++) {
if ($result[$i] != 0)
echo "There were $result[$i] instance(s) of \"" , chr($i) , "\" in the string.\n";
}?>
if ($result[$i] != 0)
echo "There were $result[$i] instance(s) of \"" , chr($i) , "\" in the string.\n";
}?>
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