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Editorial Team
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Asked: 2026-05-26T20:43:21+00:00

Say I have this HTML: <html> <head> <title>Hello [[USER_FIRST_NAME]]</title> </head> <body> <p>Hi, [[USER_FIRST_NAME]] [[USER_LAST_NAME]]!</p>

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Say I have this HTML: 

        <html>
            <head>
                <title>Hello [[USER_FIRST_NAME]]</title>
            </head>
            <body>
                <p>Hi, [[USER_FIRST_NAME]] [[USER_LAST_NAME]]!</p>
                <p><a href="mailto:[[USER_EMAIL]]">[[USER_EMAIL]]</a></p>
            </body>
        </html>

I need to preg_replace all those [[FOOBAR]] tokens with values.

End result: 

        <html>
            <head>
                <title>Hello John</title>
            </head>
            <body>
                <p>Hi, John Smith!</p>
                <p><a href="mailto:john@smith.com">john@smith.com</a></p>
            </body>
        </html>
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1 Answer

  1. Editorial Team

    The php function strtr is a good alternative to preg_replace for your case. Some example:

    $tokens = array(
    'USER_FIRST_NAME' => 'John',
    'USER_EMAIL' => 'john@smith.com',
);

$pattern = '[[%s]]';

$map = array();
foreach($tokens as $var => $value)
{
    $map[sprintf($pattern, $var)] = $value;
}

$output = strtr($template, $map);

    Basically the same answer as in multiple preg_replace on the same variable. See as well Efficient way to replace placeholders with variables.

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