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<?php function a( $fileName ) { $fileName = rtrim( $fileName, '. ' ); if ( false !== ( $pos = strrpos( $fileName, '.' ) ) ) { return substr( $fileName, $pos + 1 ); } return ''; } var_dump( a( 'VPN_CONFIG.bmp' ) );
Output for git.master, git.master_jit, rfc.property-hooks
string(3) "bmp"

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