Difference between revisions of "PHP/string"

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The official PHP docs don't really organize the [https://www.php.net/manual/en/ref.strings.php string-functions] listing very well.
 
The official PHP docs don't really organize the [https://www.php.net/manual/en/ref.strings.php string-functions] listing very well.
−
 
+
==Main Functions==
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"
 
|-
 
|-
−
!           ||            || colspan=5 | categories  
+
!             ||            || colspan=5 | categories  
 
|-
 
|-
−
! fx() name || description || escaping || int output || encryption || formatting || output
+
! fx() name   || description || escaping || int output || encryption || formatting || output
 
|-
 
|-
 
| addcslashes || Quote string with slashes in a C style || Y
 
| addcslashes || Quote string with slashes in a C style || Y
 
|-
 
|-
−
| addslashes || Quote string with slashes || Y
+
| addslashes || Quote string with slashes || Y
 
|-
 
|-
−
| ''chop'' || Alias of rtrim
+
| ''chop''   || Alias of rtrim
 
|-
 
|-
 
| count_chars || Return information about characters used in a string || || Y
 
| count_chars || Return information about characters used in a string || || Y
 
|-
 
|-
−
| crc32 || Calculates the crc32 polynomial of a string || || Y || Y
+
| crc32       || Calculates the crc32 polynomial of a string || || Y || Y
 
|-
 
|-
−
| crypt || One-way string hashing || || || Y
+
| crypt       || One-way string hashing || || || Y
 
|-
 
|-
−
| fprintf || Write a formatted string to a stream || || || Y || stream
+
| fprintf       || Write a formatted string to a stream || || || Y || stream
 
|-
 
|-
−
| localeconv — Get numeric formatting information
+
| localeconv   || Get numeric formatting information
 
|-
 
|-
−
| ltrim — Strip whitespace (or other characters) from the beginning of a string
+
| ltrim         || Strip whitespace (or other characters) from the beginning of a string
 
|-
 
|-
−
| md5_file — Calculates the md5 hash of a given file
+
| md5_file     || Calculates the md5 hash of a given file
 
|-
 
|-
−
| md5 — Calculate the md5 hash of a string
+
| md5           || Calculate the md5 hash of a string
 
|-
 
|-
−
| money_format — Formats a number as a currency string
+
| money_format || Formats a number as a currency string
 
|-
 
|-
−
| nl2br — Inserts HTML line breaks before all newlines in a string
+
| nl2br         || Inserts HTML line breaks before all newlines in a string
 
|-
 
|-
−
| number_format — Format a number with grouped thousands
+
| number_format || Format a number with grouped thousands
 
|-
 
|-
−
| ord — Convert the first byte of a string to a value between 0 and 255
+
| ord           || Convert the first byte of a string to a value between 0 and 255
 
|-
 
|-
−
| parse_str — Parses the string into variables
+
| parse_str     || Parses the string into variables
 
|-
 
|-
−
| print — Output a string
+
| print         || Output a string
 
|-
 
|-
−
| printf — Output a formatted string
+
| printf       || Output a formatted string
 
|-
 
|-
−
| quoted_printable_decode — Convert a quoted-printable string to an 8 bit 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
+
| quoted_printable_encode   || Convert a 8 bit string to a quoted-printable string
 
|-
 
|-
−
| quotemeta — Quote meta characters
+
| quotemeta     || Quote meta characters
 
|-
 
|-
−
| rtrim — Strip whitespace (or other characters) from the end of a string
+
| rtrim         || Strip whitespace (or other characters) from the end of a string
 
|-
 
|-
−
| setlocale — Set locale information
+
| setlocale     || Set locale information
 
|-
 
|-
−
| sha1_file — Calculate the sha1 hash of a file
+
| sha1_file     || Calculate the sha1 hash of a file
 
|-
 
|-
−
| sha1 — Calculate the sha1 hash of a string
+
| sha1 || Calculate the sha1 hash of a string
 
|-
 
|-
−
| similar_text — Calculate the similarity between two strings
+
| similar_text || Calculate the similarity between two strings
 
|-
 
|-
−
| soundex — Calculate the soundex key of a string
+
| soundex || Calculate the soundex key of a string
 
|-
 
|-
−
| sprintf — Return a formatted string
+
| sprintf || Return a formatted string
 
|-
 
|-
−
| sscanf — Parses input from a string according to a format
+
| sscanf || Parses input from a string according to a format
 
|-
 
|-
−
| str_contains — Determine if a string contains a given substring
+
| str_contains || Determine if a string contains a given substring
 
|-
 
|-
−
| str_ends_with — Checks if a string ends with 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_getcsv || Parse a CSV string into an array
 
|-
 
|-
−
| str_ireplace — Case-insensitive version of str_replace
+
| str_ireplace || Case-insensitive version of str_replace
 
|-
 
|-
−
| str_pad — Pad a string to a certain length with another string
+
| str_pad || Pad a string to a certain length with another string
 
|-
 
|-
−
| str_repeat — Repeat a string
+
| str_repeat || Repeat a string
 
|-
 
|-
−
| str_replace — Replace all occurrences of the search string with the replacement string
+
| str_replace || Replace all occurrences of the search string with the replacement string
 
|-
 
|-
−
| str_rot13 — Perform the rot13 transform on a string
+
| str_rot13 || Perform the rot13 transform on a string
 
|-
 
|-
−
| str_shuffle — Randomly shuffles a string
+
| str_shuffle || Randomly shuffles a string
 
|-
 
|-
−
| str_split — Convert a string to an array
+
| str_split || Convert a string to an array
 
|-
 
|-
−
| str_starts_with — Checks if a string starts with a given substring
+
| str_starts_with || Checks if a string starts with a given substring
 
|-
 
|-
−
| str_word_count — Return information about words used in a string
+
| str_word_count || Return information about words used in a string
 
|-
 
|-
−
| strcasecmp — Binary safe case-insensitive string comparison
+
| strcasecmp || Binary safe case-insensitive string comparison
 
|-
 
|-
−
| ''strchr'' — Alias of strstr
+
| ''strchr'' || Alias of strstr
 
|-
 
|-
−
| strcmp — Binary safe string comparison
+
| strcmp || Binary safe string comparison
 
|-
 
|-
−
| strcoll — Locale based string comparison
+
| strcoll || Locale based string comparison
 
|-
 
|-
−
| strcspn — Find length of initial segment not matching mask
+
| strcspn || Find length of initial segment not matching mask
 
|-
 
|-
−
| strip_tags — Strip HTML and PHP tags from a string
+
| strip_tags || Strip HTML and PHP tags from a string
 
|-
 
|-
−
| stripcslashes — Un-quote string quoted with addcslashes
+
| stripcslashes || Un-quote string quoted with addcslashes
 
|-
 
|-
−
| stripos — Find the position of the first occurrence of a case-insensitive substring in a string
+
| stripos || Find the position of the first occurrence of a case-insensitive substring in a string
 
|-
 
|-
−
| stripslashes — Un-quotes a quoted string
+
| stripslashes || Un-quotes a quoted string
 
|-
 
|-
−
| stristr — Case-insensitive strstr
+
| stristr || Case-insensitive strstr
 
|-
 
|-
−
| strlen — Get string length
+
| strlen || Get string length
 
|-
 
|-
−
| strnatcasecmp — Case insensitive string comparisons using a "natural order" algorithm
+
| strnatcasecmp || Case insensitive string comparisons using a "natural order" algorithm
 
|-
 
|-
−
| strnatcmp — 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
+
| strncasecmp || Binary safe case-insensitive string comparison of the first n characters
 
|-
 
|-
 
| strncmp || Binary safe string comparison of the first n characters
 
| strncmp || Binary safe string comparison of the first n characters
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 || conversion
 +
|-
 +
| [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
 
|-
 
|-
−
| chr || Generate a single-byte string from a number
+
| [https://www.php.net/manual/en/function.ctype-upper.php ctype_upper()] || Check for uppercase character(s) || ctype
 
|-
 
|-
−
| lcfirst || Make a string's first character lowercase
+
| [https://www.php.net/manual/en/function.ctype-xdigit.php ctype_xdigit()] || Check for character(s) representing a hexadecimal digit || ctype
 
|}
 
|}
 +
 
==Fuzzy==
 
==Fuzzy==
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"

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
print 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
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