Live Sandbox PHP strtolower(), strtoupper(), ucwords(), lcfirst(), ucfirst(), strrev(), strlen(), str_word_count() Functions
Jump to other PHP functions:
addslashes() - Add backslashes (\) base_convert() - Converts a number between two bases crc32() - Cyclic redundancy checksum crypt() - Calculate the hash of a string decbin() - Convert numbers to binary (base-2) decoct() - Convert numbers to octal (base-8) dechex() - Convert numbers to hexadecimal (base-16) dns_get_record() - Retrieves DNS resource htmlspecialchars() - Convert special characters to HTML entities lcfirst() - Converts first character to lowercase md5() - Calculate MD5 hash of a string openssl_encrypt() - Encrypts plain text data openssl_decrypt() - Decrypts cipher text openssl_get_cipher_methods() - Lists available cipher methods preg_match() - Regular expression (RegEx) match sha1() - Calculate sha1 hash of a string str_word_count() - Determines number of words in a string strlen() - Calculate character length of a string strip_tags() - Removes HTML and PHP tags from a string stripslashes() - Removes backslashes (\) strrev() - Reverses order of a string strtolower() - Convert string to all lowercase strtoupper() - Convert string to all uppercase ucfirst() - Converts first character to uppercase ucwords() - Converts first letter of each word to uppercase urlencode() - Encodes a string for use in URL query urldecode() - Decodes the query part of a URL string.
PHP strtolower(), strtoupper(), ucwords(), lcfirst(), ucfirst(), strrev(), strlen(), and str_word_count() Function
Instructions/Notes

lcfirst($your_string) - This PHP function returns a string with the first character of the input string converted to lowercase. More on lcfirst() at php.net
ucfirst($your_string) - This PHP function returns a string with the first character of the input string converted to uppercase. More on ucfirst() at php.net
strtolower($your_string) - This PHP function returns a string with all the alphabetic characters in the input string converted to lowercase. More on strtolower() at php.net
strtoupper($your_string) - This PHP function returns a string with all the alphabetic characters in the input string converted to uppercase. More on strtoupper() at php.net
ucwords($your_string) - This PHP function returns a string with the first letter of each word in the input string converted to uppercase. More on ucwords() at php.net
strrev($your_string) - This PHP function reverses the order of your string. More on strrev() at php.net
strlen($your_string) - This PHP function returns the length (number of characters) of a string as an integer value. More on strlen() at php.net
str_word_count($your_string) - This PHP function returns the number of words of a string as an integer value. More on str_word_count() at php.net



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