In category String the following functions can be found:

• addslashes
• bin2hex
• chr
• crc32
• crypt
• explode
• html_entity_decode
• htmlentities
• htmlspecialchars
• levenshtein
• md5
• ord
• sha1
• str_pad
• str_replace

• str_rot13
• stripos
• strlen
• strpos
• strripos
• strrpos
• strtr
• substr
• substr_count
• trim
• ucfirst
• ucwords
• wordwrap