If SUBNAME or BLOCK is omitted, sorts in standard string comparison order. In scalar context, the behaviour of sort is undefined. Modifiers can change how a search is performed. sort SUBNAME LIST sort BLOCK LIST sort LIST In list context, this sorts the LIST and returns the sorted list value. It also means that Perl has two versions of some operators, one for numeric and one for string comparison. The preg_match() function will tell you whether a string contains matches of a pattern. Returns a new string where matched patterns have been replaced with another string Returns the number of times the pattern was found in the string, which may also be 0 However, since Perl does automatic conversion between strings and numbers for you, you must differentiate for Perl between numeric and string comparison. Returns 1 if the pattern was found in the string and 0 if not Preg_match(), preg_match_all() and preg_replace() functions are some of the On the other hand fits the comparison method to the values on the two sides. PHP provides a variety of functions that allow you to use regular expressions. When turning a string to a number Perl looks at the left side of the string and uses as many characters as it can understand as being a number and warns if there are more - non-number - characters in the string. Slashes it is convenient to choose other delimiters such as # or ~. Most common delimiter is the forward slash (/), but when your pattern contains forward The delimiter can be any character that is not a letter, number, backslash or space. In the example above, / is the delimiter, w3schools is the pattern that is being searched for,Īnd i is a modifier that makes the search case-insensitive. String::Approx - Perl extension for approximate matching (fuzzy matching) SYNOPSIS use String::Approx 'amatch' print if amatch ('foobar') my matches amatch ('xyzzy', inputs) my catches amatch ('plugh', '2', inputs) DESCRIPTION String::Approx lets you match and substitute strings approximately. PHP Examples PHP Examples PHP Compiler PHP Quiz PHP Exercises PHP Certificate ![]() PHP - AJAX AJAX Intro AJAX PHP AJAX Database AJAX XML AJAX Live Search AJAX Poll PHP XML PHP XML Parsers PHP SimpleXML Parser PHP SimpleXML - Get PHP XML Expat PHP XML DOM MySQL Database MySQL Database MySQL Connect MySQL Create DB MySQL Create Table MySQL Insert Data MySQL Get Last ID MySQL Insert Multiple MySQL Prepared MySQL Select Data MySQL Where MySQL Order By MySQL Delete Data MySQL Update Data MySQL Limit Data libstring-compare-constanttime-perl: module for protecting string comparison from timing attacks libstring-compare-constanttime-perl-dbgsym: debug symbols. PHP OOP PHP What is OOP PHP Classes/Objects PHP Constructor PHP Destructor PHP Access Modifiers PHP Inheritance PHP Constants PHP Abstract Classes PHP Interfaces PHP Traits PHP Static Methods PHP Static Properties PHP Namespaces PHP Iterables PHP Advanced PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced PHP Callback Functions PHP JSON PHP Exceptions PHP Forms PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete Superglobals $GLOBALS $_SERVER $_REQUEST $_POST $_GET PHP RegEx
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