Online PHP editor | output for 1a6dF

@ 2016-06-09T04:25:50Z

<?php

function generateRandomString(){
    static $baz = ['consectetur', 'dolor', 'pellentesque', '__TEMPORARY_PLACEHOLDER__'];
    return array_shift($baz);
}




$message = "Lorem %tag2% ipsum dolor %tag1% sit amet, consectetur %tag2% adipiscing elit. Phasellus vestibulum tortor vitae sagittis %tag1% laoreet. Proin pellentesque urna id %tag1% rhoncus %tag2% scelerisque.";




echo "generate a unique string that is not present in the above text\n";
do{
    $uniqueToken = generateRandomString();
}while(strpos($message, $uniqueToken) !== false);

var_dump($uniqueToken);
echo "\n";






echo "backup fake tags\n";
$fakeTags = [
    '%tag1%' => $uniqueToken . '1',
    '%tag2%' => $uniqueToken . '2',
    '%tag3%' => $uniqueToken . '3',
    '%tag4%' => $uniqueToken . '4',
];
$message = str_replace(
    array_keys($fakeTags),
    array_values($fakeTags),
    $message
);
var_dump($message);
echo "\n";




echo "apply actual tags\n";
$message = "Welcome %tag1%! " . $message . " Gbye %tag2%";
var_dump($message);
echo "\n";





echo "do actual replacement\n";
$actualTags = [
    '%tag1%' => 'Pluto',
    '%tag2%' => 'Donald',
];
$message = str_replace(
    array_keys($actualTags),
    array_values($actualTags),
    $message
);
var_dump($message);
echo "\n";





echo "restore fake tags\n";
$message = str_replace(
    array_values($fakeTags),
    array_keys($fakeTags),
    $message
);
var_dump($message);
echo "\n";

Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3: generate a unique string that is not present in the above text string(25) "__TEMPORARY_PLACEHOLDER__" backup fake tags string(318) "Lorem __TEMPORARY_PLACEHOLDER__2 ipsum dolor __TEMPORARY_PLACEHOLDER__1 sit amet, consectetur __TEMPORARY_PLACEHOLDER__2 adipiscing elit. Phasellus vestibulum tortor vitae sagittis __TEMPORARY_PLACEHOLDER__1 laoreet. Proin pellentesque urna id __TEMPORARY_PLACEHOLDER__1 rhoncus __TEMPORARY_PLACEHOLDER__2 scelerisque." apply actual tags string(346) "Welcome %tag1%! Lorem __TEMPORARY_PLACEHOLDER__2 ipsum dolor __TEMPORARY_PLACEHOLDER__1 sit amet, consectetur __TEMPORARY_PLACEHOLDER__2 adipiscing elit. Phasellus vestibulum tortor vitae sagittis __TEMPORARY_PLACEHOLDER__1 laoreet. Proin pellentesque urna id __TEMPORARY_PLACEHOLDER__1 rhoncus __TEMPORARY_PLACEHOLDER__2 scelerisque. Gbye %tag2%" do actual replacement string(345) "Welcome Pluto! Lorem __TEMPORARY_PLACEHOLDER__2 ipsum dolor __TEMPORARY_PLACEHOLDER__1 sit amet, consectetur __TEMPORARY_PLACEHOLDER__2 adipiscing elit. Phasellus vestibulum tortor vitae sagittis __TEMPORARY_PLACEHOLDER__1 laoreet. Proin pellentesque urna id __TEMPORARY_PLACEHOLDER__1 rhoncus __TEMPORARY_PLACEHOLDER__2 scelerisque. Gbye Donald" restore fake tags string(225) "Welcome Pluto! Lorem %tag2% ipsum dolor %tag1% sit amet, consectetur %tag2% adipiscing elit. Phasellus vestibulum tortor vitae sagittis %tag1% laoreet. Proin pellentesque urna id %tag1% rhoncus %tag2% scelerisque. Gbye Donald"

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