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Php generar password

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Genera un string random del tipo especificado en $tipo y del tamaño pasado en $longitud.

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  1. function generarPassword( $longitud, $tipo = "alfanumerico" ){ 
  2. 	if ( $tipo=="alfanumerico" ){ 
  3. 		$exp_reg="[^A-Z0-9]"; 
  4. 	}elseif( $tipo=="alfa" ){ 
  5. 		$exp_reg="[^A-Z]"; 
  6. 	}elseif( $tipo=="numerico" ){ 
  7. 		$exp_reg="[^0-9]"; 
  8. 	} 
  9. 	return substr( eregi_replace( $exp_reg, "", md5( time() ) ) . 
  10. 	eregi_replace( $exp_reg, "", md5(time() ) ) .
  11. 	eregi_replace( $exp_reg, "", md5( time() ) ), 0, $longitud );
  12. }

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