PHP Common string manipulation functions

string Conversion class functions

addcslashes function: Use backslash to escape characters in a string in C language style

addslashes function: Using a backslash to reference a string

Chop function: Clears contiguous spaces in a string

get_html_translation_table function: Returns the conversion table for the Htmlspecialchars () function and the htmlentities () function

Chunk_split function: Splitting a string into small chunks

Hebrev function: Convert Hebrew logical characters to visible characters

Hebrevc function: Convert hebrew text to visible text, including newline characters

Html_entity_decode function: Convert HTML character encoding to character

htmlentities function: Convert character to HTML character encoding

Htmlspecialchars_decode function: Convert special HTML character encoding to character

Htmlspecialchars function: Convert special characters to HTML character encoding

NL2BR function: Converts a newline character to a "<br>"

Quotemeta function: Adding a reference character

RTrim function: Clears whitespace (or other characters) at the end of a string

Strip_tags function: Clear html and PHP tags

Stripcslashes function: Returns the string after processing with the addslashes () function as-is

stripslashes function: Clears backslashes in a string

Strtolower function: Converts all letters in a string to lowercase

Strtoupper function: Converts all letters in a string to uppercase

Trim function: Intercepts string-ending spaces (or other characters) string manipulation class functions

Explode function: Cut a string by the specified character

Str_pad function: Fills another string with one string to the specified length

Str_split function: Convert a string to an array

Str_shuffle function: Randomly disrupts character order in a string

Str_ireplace function: Replacing a substring with another string

Localeconv function: Get local numbers and currency information

LTrim function: Clears contiguous whitespace (or other characters) from the left side of the string

Money_format function: Convert a numeric string to a currency representation

Nl_langinfo function: Get language and region information

Number_format function: Formatting numeric strings with thousands separators

Parse_str function: Parsing a string into a variable

setlocale function: Setting region information

Similar_text function: Calculates the number of matched strings in two strings

Str_repeat function: Repeat with specified string

Str_replace function: Case-sensitive string substitution

Str_word_count function: Returns the number of words in a string

strcasecmp function: Compare two strings

strlen function: The length of the statistic string

strnatcmp function: Using natural sequential algorithms to compare strings

Strrev function: Invert string

Strtok function: Cut the string

STRTR function: Convert some characters of a string

Substr_count function: Calculates the number of occurrences of a string in another string

Substr_replace function: Replacing part of a string with another string

substr function: Intercept string

Ucfirst function: Change the first character in a string to uppercase

Ucwords function: Change the first letter of each word in a string to uppercase

WordWrap function: Wraps a string by the number of characters

String Lookup class function

Chr function: Converts the specified ordinal number to the corresponding ASCII code character

Implode functions: merging arrays into strings

Join function: Converting an array to a string

CRC32 function: Computes the crc32 polynomial of a string

STRCHR function: Returns the position of the first occurrence of a string in another string to the end of a substring

STRCSPN function: Returns the length of a substring in a string that does not match the mask

Stripos function: Find where a string first appears in another string (case insensitive)

Stristr function: Returns a substring of the first occurrence of a string in another string to the end of the latter (case insensitive)

Strripos function: Case-insensitive find where characters first appear in a string

Strrpos function: Find the position of the last occurrence of a character in a string

STRSPN function: Returns the length of the substring of the initial mask in a string

Strstr function: Returns the string starting at the beginning of a string in a string

string-coded class functions

Bin2Hex function: Converts binary characters to hexadecimal

convert_cyr_string function: Converts a character from one Cyrillic character to another

Convert_uudecode function: Decoding a string encoded with the UUENCODE algorithm

Convert_uuencode function: Uuencode algorithm encoding for strings

Count_chars function: Returns information about all characters in a string

Ord function: Returns the ASCII code of a character

str_rot13 function: ROT13 encoding a string

String Encryption class function

Crypt function: Encrypt strings with des encoding

Md5_file function: Calculates the md5hash of a given file

MD5 function: MD5 encryption of a string

Sha1_file function: Calculates the sha1hash of a given file

Input and output functions

echo function: Output one or more characters

fprintf function: Output formatted string to stream

Print function: Output formatted string

printf function: Output a formatted string

sprintf function: Returns a formatted string to a variable

sscanf function: Parsing input strings in a certain format

vfprintf function: Output formatted string to stream

vprintf function: Output a formatted string

vsprintf function: Output formatted string to variable

string comparison class functions

Levenshtein function: Calculates the levenshtein distance of two strings

Metaphone function: Computes the Metaphone key of a string

Soundex function: Computes the SOUNDEX key of a string

strcoll function: Compare two strings

strcmp function: Compare two strings

strnatcasecmp function: Comparing Strings with natural algorithms (case insensitive)

strncasecmp function: Compare the first n characters of a string (case insensitive)

strncmp function: Compare the first n characters of a two string

strpbrk function: Finding a series of characters in a string

Strpos function: Finding where a character in a string first appears

STRRCHR function: Finds the position of the last occurrence of a string in another string and returns a substring from this position in the string until the end of the string

Substr_compare function: Compares two strings within a certain length from the specified starting position (binary accurate, case-sensitive)

PHP Common string manipulation functions