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<?php function sanitizeFilename(string $name): string { return preg_replace( ['/ +/', '/\W+/'], ['_', ''], $name ); } echo sanitizeFilename('This/has a Gap !n 1t');
Output for 7.4.0 - 7.4.33, 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
Thishas_a_Gap_n_1t

preferences:
83.25 ms | 406 KiB | 5 Q