Online PHP editor | rfc for upNhm

@ 2016-10-12T23:03:36Z

<?php
$pattern = '/^(\b\w+\b).*\b\1\b.*/i';

//should match
$string = "TheseCharacters, I really enjoy TheseCharacters";
$result = preg_match($pattern, $string, $matches);
echo "String 1 matches {$result} times: ".print_r($matches,true)."\n";

//should match
$string = "TheseCharacters, I really enjoy TheseCharacters";
$result = preg_match($pattern, $string, $matches);
echo "String 1 matches {$result} times: ".print_r($matches,true)."\n";

//match only with case insensitive flag, not an exact match in case
$string = "TheseCharacters, I really enjoy TheseCharacters and some others";
$result = preg_match($pattern, $string, $matches);
echo "String 2 matches {$result} times: ".print_r($matches,true)."\n";

//no match, TheseCharacters has been changed to TheseLetters
$string = "TheseCharacters, I really enjoy TheseLetters";
$result = preg_match($pattern, $string, $matches);
echo "String 3 matches {$result} times: ".print_r($matches,true)."\n";

//no match, additional letters has been added to TheseCharacters
$string = "TheseCharacters, I really enjoy TheseCharactersasdf";
$result = preg_match($pattern, $string, $matches);
echo "String 4 matches {$result} times: ".print_r($matches,true)."\n";

Output for git.master, git.master_jit, rfc.property-hooks: String 1 matches 1 times: Array ( [0] => TheseCharacters, I really enjoy TheseCharacters [1] => TheseCharacters ) String 1 matches 1 times: Array ( [0] => TheseCharacters, I really enjoy TheseCharacters [1] => TheseCharacters ) String 2 matches 1 times: Array ( [0] => TheseCharacters, I really enjoy TheseCharacters and some others [1] => TheseCharacters ) String 3 matches 0 times: Array ( ) String 4 matches 0 times: Array ( )

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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