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String Functions

See Also

For even more powerful string handling and manipulating functions take a look at the POSIX regular expression functions and the Perl compatible regular expression functions.

Table of Contents

  • addcslashes - Quote string with slashes in a C style
  • addslashes - Quote string with slashes
  • bin2hex - Convert binary data into hexadecimal representation
  • chop - Alias of rtrim
  • chr - Return a specific character
  • chunk_split - Split a string into smaller chunks
  • convert_cyr_string - Convert from one Cyrillic character set to another
  • convert_uudecode - Decode a uuencoded string
  • convert_uuencode - Uuencode a string
  • count_chars - Return information about characters used in a string
  • crc32 - Calculates the crc32 polynomial of a string
  • crypt - One-way string hashing
  • echo - Output one or more strings
  • explode - Split a string by string
  • fprintf - Write a formatted string to a stream
  • get_html_translation_table - Returns the translation table used by htmlspecialchars and htmlentities
  • hebrev - Convert logical Hebrew text to visual text
  • hebrevc - Convert logical Hebrew text to visual text with newline conversion
  • hex2bin - Decodes a hexadecimally encoded binary string
  • html_entity_decode - Convert all HTML entities to their applicable characters
  • htmlentities - Convert all applicable characters to HTML entities
  • htmlspecialchars_decode - Convert special HTML entities back to characters
  • htmlspecialchars - Convert special characters to HTML entities
  • implode - Join array elements with a string
  • join - Alias of implode
  • lcfirst - Make a string's first character lowercase
  • levenshtein - Calculate Levenshtein distance between two strings
  • 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
  • metaphone - Calculate the metaphone key of a string
  • money_format - Formats a number as a currency string
  • nl_langinfo - Query language and locale information
  • nl2br - Inserts HTML line breaks before all newlines in a string
  • number_format - Format a number with grouped thousands
  • ord - Return ASCII value of character
  • 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_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_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
  • 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

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