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WMPRO, WMMINI FW >= 1.0 WMMEGA FW >= 2.0
Return the length of a string
$str: A string
Integer number of bytes in the string (it's length), 0 if $str is empty
charat() - Return the ASCII code for a character in a string at an index
strpos() - Return the position of the first occurrence of needle in haystack or -1 if not found
strrpos() - Return the last occurrence of haystack in needle, or -1 if not found
strtolower() - Return the lowercase version of a string
strtoupper() - Return the uppercase version of a string
substr() - Return a sub-string of the passed str from start for len characters. If len is blank it will return the string until the end.
ucfirst() - Convert a string to lowercase except for the first character of each word