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  1. <?php
  2.  
  3. $xml = <<<XML
  4. <item>
  5. 	<g:brand>SEGA1</g:brand><g:gtin>3254091376152</g:gtin>
  6. </item>
  7. <item>
  8. 	<g:brand>SEGA2</g:brand><g:gtin>3254091376153</g:gtin>
  9. </item>
  10. <item>
  11. 	<g:brand>SEGA3</g:brand><g:gtin>3254091376154</g:gtin>
  12. </item>
  13. XML;
  14.  
  15. $xml = preg_replace_callback(
  16. 	'#(<g:gtin>)(.*)(</g:gtin>)#',
  17. 	function ($matches) {
  18. 		return $matches[1] . mt_rand(1000000000000, 9999999999999) . $matches[3];
  19. 	},
  20. 	$xml
  21. );
  22. echo $xml;
Success #stdin #stdout 0.01s 24648KB
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<item>
	<g:brand>SEGA1</g:brand><g:gtin>1840933101610</g:gtin>
</item>
<item>
	<g:brand>SEGA2</g:brand><g:gtin>5294838471010</g:gtin>
</item>
<item>
	<g:brand>SEGA3</g:brand><g:gtin>2688568372990</g:gtin>
</item>
https://ideone.com/t3gDmk
language:
PHP (php 7.3.5)
created:
4 years ago
visibility:
public

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