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  1. <?php
  2.  
  3.     $input = array(
  4.         'Test "test" test',
  5.         "Test 'test' test",
  6.         'Test "test" "test"',
  7.         "Test 'test' 'test'",
  8.         "Test 'test' \"test\"",
  9.         'Test "te\\"st" test',
  10.         "Test 'te\\'st' test",
  11.         'Test "te\'st" test',
  12.         "Test 'te\"st' test",
  13.         'Test "te\'s\\"t" test',
  14.         "Test 'te\"s\\'t' test",
  15.     );
  16.     $pattern = '/(["\'])(?:(?!\1).|(?<=\\\\)\1)+\1/';
  17.  
  18.     foreach($input as $str)
  19.     {
  20.         echo "Input: ", $str, "\n";
  21.         preg_match_all($pattern, $str, $matches);
  22.         print_r($matches);
  23.     }
Success #stdin #stdout 0.02s 13112KB
comments (?)
stdin
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Standard input is empty
stdout
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Input: Test "test" test
Array
(
    [0] => Array
        (
            [0] => "test"
        )

    [1] => Array
        (
            [0] => "
        )

)
Input: Test 'test' test
Array
(
    [0] => Array
        (
            [0] => 'test'
        )

    [1] => Array
        (
            [0] => '
        )

)
Input: Test "test" "test"
Array
(
    [0] => Array
        (
            [0] => "test"
            [1] => "test"
        )

    [1] => Array
        (
            [0] => "
            [1] => "
        )

)
Input: Test 'test' 'test'
Array
(
    [0] => Array
        (
            [0] => 'test'
            [1] => 'test'
        )

    [1] => Array
        (
            [0] => '
            [1] => '
        )

)
Input: Test 'test' "test"
Array
(
    [0] => Array
        (
            [0] => 'test'
            [1] => "test"
        )

    [1] => Array
        (
            [0] => '
            [1] => "
        )

)
Input: Test "te\"st" test
Array
(
    [0] => Array
        (
            [0] => "te\"st"
        )

    [1] => Array
        (
            [0] => "
        )

)
Input: Test 'te\'st' test
Array
(
    [0] => Array
        (
            [0] => 'te\'st'
        )

    [1] => Array
        (
            [0] => '
        )

)
Input: Test "te'st" test
Array
(
    [0] => Array
        (
            [0] => "te'st"
        )

    [1] => Array
        (
            [0] => "
        )

)
Input: Test 'te"st' test
Array
(
    [0] => Array
        (
            [0] => 'te"st'
        )

    [1] => Array
        (
            [0] => '
        )

)
Input: Test "te's\"t" test
Array
(
    [0] => Array
        (
            [0] => "te's\"t"
        )

    [1] => Array
        (
            [0] => "
        )

)
Input: Test 'te"s\'t' test
Array
(
    [0] => Array
        (
            [0] => 'te"s\'t'
        )

    [1] => Array
        (
            [0] => '
        )

)
https://ideone.com/4iZnXd
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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