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@ 2019-12-18T15:36:05Z

<?php

$input = <<<EOT
<tr class="row0 row-hover">
        <td class="column-0 "><?php _e('Data', 'domain'); ?> </td>
        <td class="column-0 ">USD</td>
        <td class="column-0 ">EUR</td>
        <td class="column-0 ">GBP</td>
        <td class="column-0 ">CAD</td>
        <td class="column-0 ">CHF</td>
        <td class="column-0 ">HKD</td>
        <td class="column-0 ">AUD</td>
        <td class="column-0 ">SGD</td>
        <td class="column-0 ">SEK</td>
        <td class="column-0 ">NOK</td>
        <td class="column-0 ">CNH</td>
      </tr>
<tr class="row0 row-hover">
        <td class="column-0 "><?php _e('Data', 'domain'); ?> </td>
        <td class="column-0 ">USD</td>
        <td class="column-0 ">EUR</td>
        <td class="column-0 ">GBP</td>
        <td class="column-0 ">CAD</td>
        <td class="column-0 ">CHF</td>
        <td class="column-0 ">HKD</td>
        <td class="column-0 ">AUD</td>
        <td class="column-0 ">SGD</td>
        <td class="column-0 ">SEK</td>
        <td class="column-0 ">NOK</td>
        <td class="column-0 ">CNH</td>
      </tr>
EOT;


$delimiter = '</tr>';
$content = substr($input, 0, strpos($input, $delimiter) + strlen($delimiter));
$output = str_replace("<td", "<th", $content);
$output .= substr($input, strpos($input, $delimiter) + strlen($delimiter));

var_dump($output);

Output for git.master, git.master_jit, rfc.property-hooks: string(1071) "<tr class="row0 row-hover"> <th class="column-0 "><?php _e('Data', 'domain'); ?> </td> <th class="column-0 ">USD</td> <th class="column-0 ">EUR</td> <th class="column-0 ">GBP</td> <th class="column-0 ">CAD</td> <th class="column-0 ">CHF</td> <th class="column-0 ">HKD</td> <th class="column-0 ">AUD</td> <th class="column-0 ">SGD</td> <th class="column-0 ">SEK</td> <th class="column-0 ">NOK</td> <th class="column-0 ">CNH</td> </tr> <tr class="row0 row-hover"> <td class="column-0 "><?php _e('Data', 'domain'); ?> </td> <td class="column-0 ">USD</td> <td class="column-0 ">EUR</td> <td class="column-0 ">GBP</td> <td class="column-0 ">CAD</td> <td class="column-0 ">CHF</td> <td class="column-0 ">HKD</td> <td class="column-0 ">AUD</td> <td class="column-0 ">SGD</td> <td class="column-0 ">SEK</td> <td class="column-0 ">NOK</td> <td class="column-0 ">CNH</td> </tr>"

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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