(PECL ssdeep >= 1.0.0) Calculates the match score between two fuzzy hash signatures int ssdeep_fuzzy_compare ( string $signature1, string $signature2 ) Calculates the match score between signature1 and signature2 using » context-triggered piecewise hashing, and returns the match score. Parameters: signature1 The first fuzzy hash signature string.

(PHP 4, PHP 5) Make regular expression for case insensitive match string sql_regcase ( string $string ) Creates a regular expression for a case insensitive match. Parameters: string The input string. Returns: Returns a valid regular expression which will match string, ignoring case. This expression is string with each alphabetic character convert

(PHP 4 >= 4.0.1, PHP 5) Split string into array by regular expression case insensitive array spliti ( string $pattern, string $string [, int $limit = -1 ] ) Splits a string into array by regular expression. This function is identical to split() except that this ignores case distinction when matching alphabetic characters. Parameters: pattern Case insensitive regular

(PHP 4, PHP 5) Split string into array by regular expression array split ( string $pattern, string $string [, int $limit = -1 ] ) Splits a string into array by regular expression. Parameters: pattern Case sensitive regular expression. If you want to split on any of the characters which are considered special by regular expressions, you'll need to escape them first. If

(PHP 4, PHP 5) Case insensitive regular expression match int eregi ( string $pattern, string $string [, array &$regs ] ) This function is identical to ereg() except that it ignores case distinction when matching alphabetic characters. Parameters: pattern Case insensitive regular expression. string The input string.

(PHP 4, PHP 5) Replace regular expression case insensitive string eregi_replace ( string $pattern, string $replacement, string $string ) This function is identical to ereg_replace() except that this ignores case distinction when matching alphabetic characters. Parameters: pattern A POSIX extended regular expression. replacement If patte

(PHP 4, PHP 5) Regular expression match int ereg ( string $pattern, string $string [, array &$regs ] ) Searches a string for matches to the regular expression given in pattern in a case-sensitive way. Parameters: pattern Case sensitive regular expression. string The input string. regs If matches a

(PHP 4, PHP 5) Replace regular expression string ereg_replace ( string $pattern, string $replacement, string $string ) This function scans string for matches to pattern, then replaces the matched text with replacement. Parameters: pattern A POSIX extended regular expression. replacement If pattern contains parenthesized substrings, repl

(PHP 4, PHP 5, PHP 7) Split string by a regular expression array preg_split ( string $pattern, string $subject [, int $limit = -1 [, int $flags = 0 ]] ) Split the given string by a regular expression. Parameters: pattern The pattern to search for, as a string. subject The input string. limit If spec

(PHP 4, PHP 5, PHP 7) Perform a regular expression search and replace mixed preg_replace ( mixed $pattern, mixed $replacement, mixed $subject [, int $limit = -1 [, int &$count ]] ) Searches subject for matches to pattern and replaces them with replacement. Parameters: pattern The pattern to search for. It can be either a string or an array with strings. Several PCR