ThinkPHP learning-php string processing functions

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Php string processing functions

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Addcslashes-add backslash escape characters to some characters in the string
Addslashes-escape characters in the string in the specified method
Bin2hex-Convert binary data to hexadecimal representation
Alias function of chop-rtrim ()
Chr-returns the ASCII code of a character.
Chunk_split-splits a string into small parts based on a certain character length
Convert_cyr_string-converts a Slavic character to another character
Convert_uudecode-decrypts a string
Convert_uuencode-encrypt a string
Count_chars-returns the character usage information in a string.
Crc32-calculate the crc32 polynomial of a string
Crypt-one-way hash encryption function
Echo-used to display some content
Explode-convert a string into an array using a delimiter
Fprintf-return data as required and directly write data to the document stream
Get_html_translation_table-returns the HTML entity that can be converted.
Hebrev-converts a Hebrew-encoded string to a visualized text
Hebrevc-convert Hebrew-encoded strings into visualized text
The inverse function of the html_entity_decode-htmlentities () function, which converts an HTML object to a character.
Htmlentities-convert some characters in a string to HTML entities
The inverse function of the htmlspecialchars_decode-htmlspecialchars () function, which converts an HTML object to a character.
Htmlspecialchars-convert some characters in a string to HTML entities
Implode-convert an array into a string using a specific delimiter
Join-convert an array into a string, alias of the implode () function
Levenshtein-calculate the differences between two words
Localeconv-get format definitions related to numbers
Ltrim-removes white spaces or specified characters on the left of the string
Md5_file-encrypt an object using the MD5 algorithm
Md5-encrypt a string using the MD5 algorithm
Metaphone-rules for determining the pronunciation of a string
Money_format-formatted output of numbers based on parameters
Nl_langinfo-query language and local information
Nl2br-replace the linefeed "\ n" in the string with"
"
Number_format-formatted output of numbers based on parameters
Ord-converts an ASCII code to a character
Parse_str-convert strings of certain formats into variables and values
Print-Used to output a separate value
Printf-display data as required
Quoted_printable_decode-encrypt a string into an 8-bit binary string
Quotemeta-escape certain characters
Rtrim-removes spaces or specified characters on the right of the string
Setlocale-set the local format of numbers, dates, and so on
Sha1_file-encrypt a file using the SHA1 algorithm
Sha1-encrypt a string using the SHA1 algorithm
Similar_text-compares two strings and returns the number of similar characters that the system considers.
Soundex-rules for determining the pronunciation of a string
Sprintf-return data as required, but do not output
Sscanf-you can format strings.
Str_ireplace-match and replace strings like the str_replace () function, but not case sensitive
Str_pad-pad both sides of the string
Str_repeat-repeated string combination
Str_replace-match and replace strings
Str_rot13-encrypt the string with ROT13
Str_shuffle-random sorting of characters in a string
Str_split-splits a string into an array based on the character spacing
Str_word_count-get the English word information in the string
Strcasecmp-compare the string size, case insensitive
Strchr-returns the alias of some strstr () functions of a string through comparison
Strcmp-compare the string size
Strcoll-compare the string size based on local settings
Strcspn-returns the value of consecutive non-matching lengths.
Strip_tags-remove HTML and PHP code from a string
Stripcslashes-returns the string processed by the addcslashes () function escape function.
Stripos-locate and return the position of the first matching item. the matching is case insensitive.
Stripslashes-returns the string that has been escaped by the implicit addslashes () function.
Stristr-returns the part of a string through comparison. the comparison is case insensitive.
Strlen-get the encoding length of a string
Strnatcasecmp-use the natural sorting method to compare the string size, case insensitive
Strnatcmp-use the natural sorting method to compare the string size
Strncasecmp-compare the size of the first N characters of a string, case insensitive
Strncmp-compare the size of the first N characters of a string
Strpbrk-returns the part of a string through comparison
Strpos-locate and return the position of the first matching item
Strrchr-returns the part of a string through comparison from the back to the back
Strrev-reverse sort all letters in the string
Strripos-search from the back and return the position of the first matching item. the matching is case insensitive.
Strrpos-search from the back and return the position of the first matching item
Strsps-matched and returned continuous length of characters
Strstr-returns the part of a string through comparison
Strtok-use a specified number of characters to separate strings
Strtolower-convert string to lowercase
Strtoupper-converts a string to uppercase
Strtr-replace string comparison
Substr_compare-comparison after string truncation
Substr_count-calculates the number of occurrences of a character segment in a string
Substr_replace-replace some characters in the string
Substr-truncates a string
Trim-removes spaces or specified characters on both sides of the string
Ucfirst-converts the first letter of the given string into uppercase letters.
Ucwords-converts the first letter of each English word of the given string into uppercase letters.
Vfprintf-return data as required and directly write data to the document stream
Vprintf-display data as required
Vsprintf-return data as required, but no output
Wordwrap-splits a string based on a certain character length

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