<?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 5.6.0 - 5.6.26, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- 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
(
)
preferences:
232.5 ms | 404 KiB | 225 Q