How can I do a search and replace in a PHP string based on values in a JSON string?

Question

In PHP I have this json string with search and replace words

$json = '[{"Original":"test1","Replacement":"test1a"},{"Original":"test2","Replacement":"test2a"}]';

Now I want to do a search and replace in a text string for all items in this json file.

$searchReplaceArray = '[{"Original":"test1","Replacement":"test1a"},{"Original":"test2","Replacement":"test2a"}]';

$text1 = 'Hello test1, let me see if test2 is also replaced...';
$text2 = str_ireplace(array_keys($searchReplaceArray), array_values($searchReplaceArray),$text1);

echo 'Original: ' . $text1 . '<br>';
echo 'Replace: '  . $text2;

I expect $text2 to be: "Hello test1a, let me see if test2a is also replaced..."

However, it does not work. Any help would be appreciated.

I would have converted the JSON using json_decode() and gone from there, but its not valid JSON — RiggsFolly
– RiggsFolly, Commented Feb 6, 2022 at 12:07
Okay, so I changed the json string into [{"Original":"test1","Replacement":"test1a"},{"Original":"test2","Replacement":"test2a"}]. And then I used json_decode to get a PHP array. When dumping , I get this: array(2) { [0]=> array(2) { ["Original"]=> string(5) "test1" ["Replacement"]=> string(6) "test1a" } [1]=> array(2) { ["Original"]=> string(5) "test2" ["Replacement"]=> string(6) "test2a" } } — MikeMynis
– MikeMynis, Commented Feb 6, 2022 at 12:15

splash58 · Accepted Answer · 2022-02-06 12:14:13Z

1

// It's not a valid Json,  so you need add square brackets around it
$searchReplaceArray = '['. $json .']';

$searchReplaceArray = json_decode($searchReplaceArray, true);
// get search array
$Original = array_column($searchReplaceArray , 'Original');
// get replacement array
$Replacement = array_column($searchReplaceArray , 'Replacement');

$text1 = 'Hello test1, let me see if test2 is also replaced...';
$text2 = str_ireplace($Original, $Replacement,$text1);

echo 'Original: ' . $text1 . '<br>';
echo 'Replace: '  . $text2;

// Replace: Hello test1a, let me see if test2a is also replaced...

answered Feb 6, 2022 at 12:14

splash58

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