Difference between revisions of "PHP/string"
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| Line 183: | Line 183: | ||
==Single Character== | ==Single Character== | ||
{| class="wikitable sortable" | {| class="wikitable sortable" | ||
| − | ! fx() name || description | + | ! fx() name || description || category |
|- | |- | ||
| − | | [https://www.php.net/manual/en/function.chr.php chr()] || Generate a single-byte string from a number | + | | [https://www.php.net/manual/en/function.chr.php chr()] || Generate a single-byte string from a number || conversion |
|- | |- | ||
| − | | [https://www.php.net/manual/en/function.lcfirst lcfirst()] || Make a string's first character lowercase | + | | [https://www.php.net/manual/en/function.lcfirst lcfirst()] || Make a string's first character lowercase || conversion |
| + | |- | ||
| + | | [https://www.php.net/manual/en/function.ctype-alnum.php ctype_alnum()] || Check for alphanumeric character(s) || ctype | ||
| + | |- | ||
| + | | [https://www.php.net/manual/en/function.ctype-alpha.php ctype_alpha()] || Check for alphabetic character(s) || ctype | ||
| + | |- | ||
| + | | [https://www.php.net/manual/en/function.ctype-cntrl.php ctype_cntrl()] || Check for control character(s) || ctype | ||
| + | |- | ||
| + | | [https://www.php.net/manual/en/function.ctype-digit.php ctype_digit()] || Check for numeric character(s) || ctype | ||
| + | |- | ||
| + | | [https://www.php.net/manual/en/function.ctype-graph.php ctype_graph()] || Check for any printable character(s) except space || ctype | ||
| + | |- | ||
| + | | [https://www.php.net/manual/en/function.ctype-lower.php ctype_lower()] || Check for lowercase character(s) || ctype | ||
| + | |- | ||
| + | | [https://www.php.net/manual/en/function.ctype-print.php ctype_print()] || Check for printable character(s) || ctype | ||
| + | |- | ||
| + | | [https://www.php.net/manual/en/function.ctype-punct.php ctype_punct()] || Check for any printable character which is not whitespace or an alphanumeric character || ctype | ||
| + | |- | ||
| + | | [https://www.php.net/manual/en/function.ctype-space.php ctype_space()] || Check for whitespace character(s) || ctype | ||
| + | |- | ||
| + | | [https://www.php.net/manual/en/function.ctype-upper.php ctype_upper()] || Check for uppercase character(s) || ctype | ||
| + | |- | ||
| + | | [https://www.php.net/manual/en/function.ctype-xdigit.php ctype_xdigit()] || Check for character(s) representing a hexadecimal digit || ctype | ||
|} | |} | ||
Latest revision as of 13:19, 23 August 2023
The official PHP docs don't really organize the string-functions listing very well.
Main Functions
| categories | ||||||
|---|---|---|---|---|---|---|
| fx() name | description | escaping | int output | encryption | formatting | output |
| addcslashes | Quote string with slashes in a C style | Y | ||||
| addslashes | Quote string with slashes | Y | ||||
| chop | Alias of rtrim | |||||
| count_chars | Return information about characters used in a string | Y | ||||
| crc32 | Calculates the crc32 polynomial of a string | Y | Y | |||
| crypt | One-way string hashing | Y | ||||
| fprintf | Write a formatted string to a stream | Y | stream | |||
| localeconv | Get numeric formatting information | |||||
| ltrim | Strip whitespace (or other characters) from the beginning of a string | |||||
| md5_file | Calculates the md5 hash of a given file | |||||
| md5 | Calculate the md5 hash of a string | |||||
| money_format | Formats a number as a currency string | |||||
| nl2br | Inserts HTML line breaks before all newlines in a string | |||||
| number_format | Format a number with grouped thousands | |||||
| ord | Convert the first byte of a string to a value between 0 and 255 | |||||
| parse_str | Parses the string into variables | |||||
| Output a string | ||||||
| printf | Output a formatted string | |||||
| quoted_printable_decode | Convert a quoted-printable string to an 8 bit string | |||||
| quoted_printable_encode | Convert a 8 bit string to a quoted-printable string | |||||
| quotemeta | Quote meta characters | |||||
| rtrim | Strip whitespace (or other characters) from the end of a string | |||||
| setlocale | Set locale information | |||||
| sha1_file | Calculate the sha1 hash of a file | |||||
| sha1 | Calculate the sha1 hash of a string | |||||
| similar_text | Calculate the similarity between two strings | |||||
| soundex | Calculate the soundex key of a string | |||||
| sprintf | Return a formatted string | |||||
| sscanf | Parses input from a string according to a format | |||||
| str_contains | Determine if a string contains a given substring | |||||
| str_ends_with | Checks if a string ends with a given substring | |||||
| str_getcsv | Parse a CSV string into an array | |||||
| str_ireplace | Case-insensitive version of str_replace | |||||
| str_pad | Pad a string to a certain length with another string | |||||
| str_repeat | Repeat a string | |||||
| str_replace | Replace all occurrences of the search string with the replacement string | |||||
| str_rot13 | Perform the rot13 transform on a string | |||||
| str_shuffle | Randomly shuffles a string | |||||
| str_split | Convert a string to an array | |||||
| str_starts_with | Checks if a string starts with a given substring | |||||
| str_word_count | Return information about words used in a string | |||||
| strcasecmp | Binary safe case-insensitive string comparison | |||||
| strchr | Alias of strstr | |||||
| strcmp | Binary safe string comparison | |||||
| strcoll | Locale based string comparison | |||||
| strcspn | Find length of initial segment not matching mask | |||||
| strip_tags | Strip HTML and PHP tags from a string | |||||
| stripcslashes | Un-quote string quoted with addcslashes | |||||
| stripos | Find the position of the first occurrence of a case-insensitive substring in a string | |||||
| stripslashes | Un-quotes a quoted string | |||||
| stristr | Case-insensitive strstr | |||||
| strlen | Get string length | |||||
| strnatcasecmp | Case insensitive string comparisons using a "natural order" algorithm | |||||
| strnatcmp | String comparisons using a "natural order" algorithm | |||||
| strncasecmp | Binary safe case-insensitive string comparison of the first n characters | |||||
| strncmp | Binary safe string comparison of the first n characters | |||||
| strpbrk | Search a string for any of a set of characters | |||||
| strpos | Find the position of the first occurrence of a substring in a string | |||||
| strrchr | Find the last occurrence of a character in a string | |||||
| strrev | Reverse a string | |||||
| strripos | Find the position of the last occurrence of a case-insensitive substring in a string | |||||
| strrpos | Find the position of the last occurrence of a substring in a string | |||||
| strspn | Finds the length of the initial segment of a string consisting entirely of characters contained within a given mask | |||||
| strstr | Find the first occurrence of a string | |||||
| strtok | Tokenize string | |||||
| strtolower | Make a string lowercase | |||||
| strtoupper | Make a string uppercase | |||||
| strtr | Translate characters or replace substrings | |||||
| substr_compare | Binary safe comparison of two strings from an offset, up to length characters | |||||
| substr_count | Count the number of substring occurrences | |||||
| substr_replace | Replace text within a portion of a string | |||||
| substr | Return part of a string | |||||
| trim | Strip whitespace (or other characters) from the beginning and end of a string | |||||
| ucfirst | Make a string's first character uppercase | |||||
| ucwords | Uppercase the first character of each word in a string | |||||
| utf8_decode | Converts a string from UTF-8 to ISO-8859-1, replacing invalid or unrepresentable characters | |||||
| utf8_encode | Converts a string from ISO-8859-1 to UTF-8 | |||||
| vfprintf | Write a formatted string to a stream | |||||
| vprintf | Output a formatted string | |||||
| vsprintf | Return a formatted string | |||||
| wordwrap | Wraps a string to a given number of characters | |||||
Splitting/Joining
| fx() name | description |
|---|---|
| chunk_split | Split a string into smaller chunks |
| explode | Split a string by a string |
| implode | Join array elements with a string |
| join | Alias of implode |
Single Character
| fx() name | description | category |
|---|---|---|
| chr() | Generate a single-byte string from a number | conversion |
| lcfirst() | Make a string's first character lowercase | conversion |
| ctype_alnum() | Check for alphanumeric character(s) | ctype |
| ctype_alpha() | Check for alphabetic character(s) | ctype |
| ctype_cntrl() | Check for control character(s) | ctype |
| ctype_digit() | Check for numeric character(s) | ctype |
| ctype_graph() | Check for any printable character(s) except space | ctype |
| ctype_lower() | Check for lowercase character(s) | ctype |
| ctype_print() | Check for printable character(s) | ctype |
| ctype_punct() | Check for any printable character which is not whitespace or an alphanumeric character | ctype |
| ctype_space() | Check for whitespace character(s) | ctype |
| ctype_upper() | Check for uppercase character(s) | ctype |
| ctype_xdigit() | Check for character(s) representing a hexadecimal digit | ctype |
Fuzzy
| fx() name | description |
|---|---|
| levenshtein | Calculate Levenshtein distance between two strings |
| metaphone | Calculate the metaphone key of a string |
Conversion
| fx() name | description | conversion format |
|---|---|---|
| bin2hex | Convert binary data into hexadecimal representation | hexadecimal |
| convert_cyr_string | Convert from one Cyrillic character set to another | Cyrillic |
| convert_uudecode | Decode a uuencoded string | uuencoding |
| convert_uuencode | Uuencode a string | uuencoding |
| get_html_translation_table | Returns the translation table used by htmlspecialchars and htmlentities | HTML |
| hebrev | Convert logical Hebrew text to visual text | Hebrew |
| hebrevc | Convert logical Hebrew text to visual text with newline conversion | Hebrew |
| hex2bin | Decodes a hexadecimally encoded binary string | hexadecimal |
| html_entity_decode | Convert HTML entities to their corresponding characters | HTML |
| htmlentities | Convert all applicable characters to HTML entities | HTML |
| htmlspecialchars_decode | Convert special HTML entities back to characters | HTML |
| htmlspecialchars | Convert special characters to HTML entities | HTML |
| nl_langinfo — Query language and locale information | locale |