<?php
 
	dividir( 'sem extensão' );
	dividir( 'com.pontos.no.meio.doc' );
	dividir( 'arquivo_comum.jpg' );
 
function dividir( $file ) {
 
	$ext = ( $pos === false ) ? 
'' : substr( $file, $pos + 1 ); 	$arq = ( $pos === false ) ? 
$file : substr( $file, 0, $pos );  
	echo "Extensão : $ext \n";
	echo "Arquivo  : $arq \n";
    echo "-------------------------\n";
}
 
?>
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