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This article mainly introduces what PHP string processing functions have, which have a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.

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The PHP language has core features such as powerful string and array processing capabilities, while greatly improving support for object-oriented programming (PHP5 and above). By using standard and optional extension modules, PHP applications can connect to dozens of databases, drawings, create PDF files, and create parsing XML files, such as MySQL or Oracle. You can also write your own PHP extension module in C language. For example, provide an interface function for PHP in an existing code base. You can also run PHP under Windows, use COM to control other Windows applications such as Word and Excel, or use ODBC to connect to the database. Here is a summary of PHP string handling functions.

Summary of PHP string handling functions:

Addcslashes-- add the backslash escape character addslashes for some characters in the string-- escape the characters in the string in the specified way-- convert the binary data to hexadecimal representation chr-- return the ASCII code chunk_split of one character-- divide the string into small chunks of convert_cyr_string by a certain character length-- Slavonic. Convert characters to other characters convert_uudecode-decrypt a string convert_uuencode-encrypt a string count_chars-return the character usage information in a string crc32-calculate the crc32 polynomial crypt of a string-one-way hash encryption function explode-convert a string into an array form fprintf with a separator-return the data as required And directly write to the document stream get_html_translation_table-return the inverse function of the convertible HTML entity html_entity_decode-htmlentities () function, convert the HTML entity to the character htmlentities-convert some characters in the string into the inverse function of the HTML entity htmlspecialchars_decode-htmlspecialchars () function Convert HTML entities to characters htmlspecialchars-- convert some characters in a string to HTML entity implode-- convert arrays to string join with specific delimiters-- convert arrays to strings Alias levenshtein of the implode () function-- calculate the difference between two words localeconv-- get the number-related format definition ltrim-- remove the white space on the left side of the string or the specified character md5_file-- encrypt a file with the MD5 algorithm md5-- encrypt a string with the MD5 algorithm metaphone-- determine the pronunciation rules of a string money_format-- -output nl_langinfo for formatting numbers according to parameters-query language and local information nl2br-replace newline characters "\ n" in strings with "number_format"-output ord for formatting numbers according to parameters-convert an ASCII code to a character parse_str-convert a formatted string into variables and values Print-- to output a single value printf-- to display data as required quoted_printable_decode-- to encrypt a string into an 8-bit binary string quotemeta-- to escape rtrim for specific characters-- to remove whitespace on the right side of the string or the specified character setlocale-- to set about numbers Local format sha1_file for dates, etc.-encrypt a file with SHA1 algorithm sha1-encrypt a string with SHA1 algorithm similar_text-compare two strings, return the number of similar characters considered by the system soundex-determine the pronunciation rule of a string sprintf-return data as required But do not output sscanf-- you can format the string str_ireplace-- match and replace the string like the str_replace () function But case-insensitive str_pad-- padding str_repeat on both sides of a string-- repeated combination of strings str_replace-- matching and replacing the string str_rot13-- ROT13 encryption of strings str_shuffle-- random sorting of characters in a string-- str_split-- dividing a string by character spacing Cut into an array str_word_count-- get the English word information strcasecmp in the string-- compare the size of the string. Case-insensitive strchr-- alias strcmp of the partial strstr () function that returns a string by comparing-- size comparison of the string strcoll-- size comparison of the string according to local settings-- return the value strip_tags of the continuous unmatched length of the character-- remove the HTML and PHP code stripcslashes in a string-- reverse the addcslashes () function Escape the processed string stripos-- find and return the location of the match Matching is not case-sensitive thank you for reading this article carefully. I hope the article "what are the PHP string handling functions" shared by the editor will be helpful to you. At the same time, I also hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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