ph PHP5 string processing function Daquan

Source: Internet
Author: User
Tags crc32 format definition rtrim sha1
Addcslashes-adds a backslash escape character for some characters inside a string
addslashes-characters inside a string are escaped in the specified manner
bin2hex-converts binary data to hexadecimal notation
alias function for Chop-rtrim ()
chr-returns the ASCII code of a character
Chunk_split-divide a string into small pieces at a certain length of character
Convert_cyr_string-converting Slavic characters to other characters
convert_uudecode-decrypting a string
convert_uuencode-Encrypt a string
count_chars-returns the character usage information for a string
crc32-computes a crc32 polynomial of a string
crypt-one-way hash encryption function
Echo-used to display some content
Explode-converts a string into an array form with a separator
fprintf-returns data as required and writes directly to the document stream
Get_html_translation_table-returning HTML entities that can be converted
hebrev-converting Hebrew encoded strings to visual text
hebrevc-converting Hebrew encoded strings to visual text
Inverse of the html_entity_decode-htmlentities () function to convert HTML entities to characters
htmlentities-convert some characters in a string to HTML entities
Inverse of the htmlspecialchars_decode-htmlspecialchars () function to convert HTML entities to characters
htmlspecialchars-convert some characters in a string to HTML entities
implode-to convert an array to a string with a specific separator character
join-convert an array to a string, alias of the Implode () function
levenshtein-Calculate the difference size of two words
localeconv-getting a number-related format definition
ltrim-to remove whitespace to the left of a string or to a specified character
md5_file-a file for MD5 algorithm encryption
md5-a string for MD5 algorithm encryption
Metaphone-judging the pronunciation rules of a string
money_format-output of numbers formatted according to parameters
nl_langinfo-querying language and local information
nl2br-Replace the newline character "\ n" in the string with "

number_format-output of numbers formatted according to parameters
ord-converts an ASCII code to one character
parse_str-Convert a string of a certain format into a variable and a value
Print-used to output a single value
printf-data Display as required
Quoted_printable_decode-to encrypt a string into a 8-bit binary string
Quotemeta-to escape a number of specific characters
rtrim-remove whitespace to the right of a string or a specified character
setlocale-setting local formats for numbers, dates, and so on
sha1_file-a file for SHA1 algorithm encryption
Sha1-a string for SHA1 algorithm encryption
Similar_text-compares two strings and returns the number of similar characters that the system thinks
Soundex-judging the pronunciation rules of a string
The sprintf-returns the data as required, but does not output
sscanf-can format a string
str_ireplace-matches and replaces strings like the Str_replace () function, but is case insensitive
str_pad-padding on both sides of a string
str_repeat-repeating combinations of strings
str_replace-matching and replacing strings
str_rot13-string for ROT13 encryption processing
str_shuffle-random ordering of characters inside a string
str_split-splits a string into an array by character spacing
str_word_count-get the English word information inside the string
strcasecmp-size comparison of strings, case insensitive
Strchr-the alias of a partial strstr () function that returns a string by comparison
strcmp-size comparison of strings
strcoll– size comparison of strings based on local settings
strcspn-returns the value of a continuous non-matching length of characters
strip_tags-remove HTML and PHP code from a string
stripcslashes-inverse literal addcslashes () function escapes processed strings
Stripos-finds and returns the position of the first occurrence, matching is case-insensitive
stripslashes-inverse literal addslashes () function escapes processed strings
stristr-returns a portion of a string by comparison, case-insensitive compared
Strlen-gets the encoded length of a string
strnatcasecmp-the size comparison of strings using natural sorting, case-insensitive
strnatcmp-the size comparison of strings using the natural sort method
strncasecmp-size comparison of the first n characters of a string, case insensitive
strncmp-size comparison of the first n characters of a string
strpbrk-returns a portion of a string by comparison
strpos-Find and return the position of the first occurrence
strrchr-returns a part of a string by comparing it from backward to forward
strrev-all letters inside the string in reverse order
Strripos-finds and returns the position of the first match from the back, matching is case insensitive
strrpos– Find and return the position of the first match from behind
strspn-matches and returns the value of the character continuous occurrence length
strstr-returns a portion of a string by comparison
strtok-to split a string with a specified number of characters
strtolower-converting a string to lowercase
strtoupper– converting a string to uppercase
strtr-to string comparison substitution
Substr_compare-Comparison of strings after interception
substr_count-count occurrences of a character segment in a string
substr_replace-to replace part of a character in a string
substr-to intercept a string
trim-remove whitespace or specified characters on either side of a string
Ucfirst-converts the first letter of a given string to uppercase
ucwords-the first letter of each English word of the given string into uppercase
vfprintf-returns data as required and writes directly to the document stream
vprintf-data Display as required
The vsprintf-returns the data as required, but does not output
wordwrap-to divide a string by a certain character length
The Strtolower () function turns all characters into lowercase, the strtoupper () function capitalizes all characters, and the Ucfirst () function converts the first letter of a given string to uppercase, Ucwords () function to capitalize the first letter of each English word of a given string. Ucfirst () only handles the first character of the string, and Ucwords () handles only the first letter of each word (with a space to define whether it is a word, "today! Hi "," today. Hi "is considered to be a word), and the case state of the remaining letters does not change.
For more information, refer to:
PHP character Functions Daquan

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