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@ 2022-08-21T03:30:13Z

<?php

$text = "1 out of 23";

echo preg_match('/\d+(?=\D*$)/', $text, $m) ? $m[0] : '';
echo "\n";
echo sscanf($text, '%*d out of %d')[0];

echo "\n--- \n";

$text = "1 out of 23 more";

echo preg_match('/\d+(?=\D*$)/', $text, $m) ? $m[0] : '';
echo "\n";
echo sscanf($text, '%*d out of %d')[0];

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)
sscanf: documentation ( source)

preferences:dark modelive previewkey bindings

30.83 ms | 405 KiB | 5 Q