addcslashes() | Add backslashes before some specified characters in a given string. | |
addslashes() | Returns a string with backslashes in front of predefined characters. | |
bin2hex() | The conversion is done byte-wise with the high-nibble first. | |
chop() | Remove white spaces or any other specified characters from the end of a string. | |
chr() | Convert a ASCII value to a character. | |
chunk_split() | Split a string into smaller chunks of a specific length. | |
convert_uudecode() | Decode a uuencoded string encoded using convert_uuencode() function. | |
convert_uuencode() | Encodes a string using the uuencode algorithm. | |
count_chars() | Perform several operations related to string like the number of an ASCII character occurs in a string. | |
crc32() | This function can be used to validate data integrity. | |
PHP crypt() | Returns a hashed string using DES, Blowfish, or MD5 algorithms. | |
password_hash() | Returns the hashed string on success or FALSE | |
echo | Display the output of parameters that are passed to it. | |
explode() | Explode() function splits a string based on a string delimiter | |
hex2bin() | Decode a hexadecimally encoded binary string. | |
implode() | Elements of an array. implode() is an alias for PHP | |
join() | Join an array of elements that are separated by a string. | |
lcfirst() | It takes a string as an argument | |
levenshtein() | Calculate the levenshtein distance between two strings | |
ltrim() | Removes whitespaces or other characters | |
md5_file() | Generate the md5 hash value of a given file. | |
md5() | This function can take up to a maximum of two parameters | |
metaphone() | Calculate the metaphone key of a given string. | |
nl2br() | Insert HTML break tags in the place of all new lines in a string. | |
number_format() | Format a number with grouped thousands. | |
ord() | Returns the ASCII value of the first character of a string | |
parse_str() | parse_str() function is a built-in function in PHP which parses a query string into variables. | |
quoted_printable_decode() | Decode a quoted printable string in PHP into an 8-bit string. | |
quoted_printable_encode() | Convert an 8-bit string to a quoted printable string. | |
quotemeta() | Accepts a string as an argument and returns a string | |
rtrim() | Removes whitespaces or other characters (if specified) from the right side of a string. | |
sha1_file() | Returns a string on success and returns FALSE otherwise. | |
sha1() | This function an take up to a maximum of two parameters | |
similar_text() | Returns the number of matching characters in the two strings. | |
soundex() | Calculate the Soundex key of a given string. | |
str_pad() | Pad a string to a given length. | |
str_repeat() | Create a new string by repeating a given string fixed number of times. | |
str_replace() | Replace all the occurrences of the search string or array of search strings | |
str_rot13() | Accepts a string and shifts every alphabet present in the string by 13 places in the alphabet | |
str_shuffle() | Randomly shuffle all the characters of a string passed to the function as a parameter. | |
str_split() | Convert the given string into an array. | |
str_word_count() | String like total number word in the string, positions of the words in the string etc. | |
strcasecmp() | This is used to compare two given strings. | |
strchr() | Search for the first occurrence of a given string | |
strcmp() | It is used to compare two strings | |
strcoll() | It is used to compare two strings. | |
strcspn() | Returns the number of characters present in a string | |
strip_tags() | This is used to strips a string from HTML, and PHP tags. | |
stripos() | Find the position of the first occurrence of a string in another string. | |
stripslashes() | Removes backslashes in a string. | |
stristr() | It searches for the first occurrence of a string inside another string and displays the portion | |
strlen() | It takes a string as a parameter and returns its length. | |
strnatcasecmp() | This function is similar to strnatcmp()only difference being the (case-insensitivity). | |
strnatcmp() | Return a positive integer, negative, or zero. | |
strncasecmp() | Compare two given strings. It is case-insensitive. | |
strncmp() | Compare the first n character of two strings. | |
strpbrk() | Searches a string for any of the specified characters. | |
strpos() | Find the position of the first occurrence of a string in another string. | |
strrchr() | This function takes two arguments a string and a character. | |
strrev() | It is used to reverse a string. | |
strripos() | Out of the three parameters specified in the syntax, two are mandatory and one is optional | |
strrpos() | Out of the three parameters specified in the syntax, two are mandatory and one is optional. | |
strspn() | Finds the length of the initial segment of a string | |
strstr() | It searches for the first occurrence of a string inside another string and displays the portion | |
strtok() | Tokenize a string into smaller parts on the basis of given delimiters | |
strtolower() | Convert a string into lowercase. | |
strtoupper() | Convert a string into uppercase | |
strtr() | Replace a substring in a string to a given string of characters. | |
substr_compare() | Compare two strings from a specified start position upto a specified length. | |
substr_count() | Count the number of times a substring occurs in a given string. | |
substr_replace() | Replace a part of a string with another string. | |
substr() | That is used to extract a part of a string. | |
trim() | Removes whitespaces and also the predefined characters from both sides. | |
ucfirst() | Takes a string as an argument and returns the string | |
ucwords() | Convert the first character of every word in a string to upper-case. | |
vprintf() | Display array values as a formatted string | |
vsprintf() | Display array values as a formatted string. | |
wordwrap() | Wraps a given string to a given number of characters using a string break character. | |