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<?php $str = 'producturl.php?id=736375493?=tm'; var_dump( sscanf($str, '%*[^?]?id=%d')[0] );
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
int(736375493)

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103.8 ms | 406 KiB | 5 Q