[Resolvido] fopen,fclose entre outros quero dica

seguinte estou com uma duvida pode ser simples mais eu nunca usei isso

alguem pode me ajudar?

eu to tentando criar um arquivo de texto e escrever nele

criei uma pagina de form pra pegar as informações

<form action="" method="post" enctype="multipart/form-data">
Nome: <input name="nome" type="text" size="25" /><br />

E-mail: <input name="email" type="text" /><br />
Nascimento <select name="ano">
 <option value="2011" selected="selected">2011</option>
 <option value="2010">2010</option>
 <option value="2009">2009</option>
<option value="2008">2008</option>
 <option value="2007">2007</option>
 <option value="2006">2006</option>
 <option value="2005">2005</option>
 <option value="2004">2004</option>
 <option value="2003">2003</option>
 <option value="2002">2002</option>
 <option value="2001">2001</option>
 <option value="2000">2000</option>
 <option value="1999">1999</option>
 <option value="1998">1998</option>
 <option value="1997">1997</option>
 <option value="1996">1996</option>
 <option value="1995">1995</option>
 <option value="1994">1994</option>
 <option value="1993">1993</option>
 <option value="1992">1992</option>
 <option value="1991">1991</option>
 <option value="1990">1990</option>
 <option value="1989">1989</option>
 <option value="1988">1988</option>
 <option value="1987">1987</option>
 <option value="1986">1986</option>
 <option value="1985">1985</option>
 <option value="1984">1984</option>
 <option value="1983">1983</option>
 <option value="1982">1982</option>
 <option value="1981">1981</option>
 <option value="1980">1980</option>
 <option value="1979">1979</option>
 <option value="1978">1978</option>
 <option value="1977">1977</option>
 <option value="1976">1976</option>
 <option value="1975">1975</option>
 <option value="1974">1974</option>
 <option value="1973">1973</option>
 <option value="1972">1972</option>
 <option value="1971">1971</option>
 <option value="1970">1970</option>
 <option value="1969">1969</option>
 <option value="1968">1968</option>
 <option value="1967">1967</option>
 <option value="1966">1966</option>
 <option value="1965">1965</option>
 <option value="1964">1964</option>
 <option value="1963">1963</option>
 <option value="1962">1962</option>
 <option value="1961">1961</option>
 <option value="1960">1960</option>
 <option value="1959">1959</option>
 <option value="1958">1958</option>
 <option value="1957">1957</option>
 <option value="1956">1956</option>
 <option value="1955">1955</option>
 <option value="1954">1954</option>
 <option value="1953">1953</option>
 <option value="1952">1952</option>
 <option value="1951">1951</option>
 <option value="1950">1950</option>
 <option value="1949">1949</option>
 <option value="1948">1948</option>
 <option value="1947">1947</option>
 <option value="1946">1946</option>
 <option value="1945">1945</option>
 <option value="1944">1944</option>
 <option value="1943">1943</option>
 <option value="1942">1942</option>
 <option value="1941">1941</option>
 <option value="1940">1940</option>
 <option value="1939">1939</option>
 <option value="1938">1938</option>
 <option value="1937">1937</option>
 <option value="1936">1936</option>
 <option value="1935">1935</option>
 <option value="1934">1934</option>
 <option value="1933">1933</option>
 <option value="1932">1932</option>
 <option value="1931">1931</option>
 <option value="1930">1930</option>
 <option value="1929">1929</option>
 <option value="1928">1928</option>
 <option value="1927">1927</option>
 <option value="1926">1926</option>
 <option value="1925">1925</option>
 <option value="1924">1924</option>
 <option value="1923">1923</option>
 <option value="1922">1922</option>
 <option value="1921">1921</option>
 <option value="1920">1920</option>
 <option value="1919">1919</option>
 <option value="1918">1918</option>
 <option value="1917">1917</option>
 <option value="1916">1916</option>
 <option value="1915">1915</option>
 <option value="1914">1914</option>
 <option value="1913">1913</option>
 <option value="1912">1912</option>
 <option value="1911">1911</option>
 <option value="1910">1910</option>
 <option value="1909">1909</option>
 <option value="1908">1908</option>
 <option value="1907">1907</option>
 <option value="1906">1906</option>
 <option value="1905">1905</option>
 <option value="1904">1904</option>
 <option value="1903">1903</option>
 <option value="1902">1902</option>
 <option value="1901">1901</option>
 <option value="1900">1900</option>
</select>
<br />

Selecione o Estado

<select name="estados">
 <option value="" selected="selected">Estado</option>
 <option value="AC">AC</option>
 <option value="AL">AL</option>
 <option value="AM">AM</option>
 <option value="BA">BA</option>
 <option value="CE">CE</option>
 <option value="DF">DF</option>
 <option value="ES">ES</option>
 <option value="GO">GO</option>
 <option value="MA">MA</option>
 <option value="MG">MG</option>
 <option value="MS">MS</option>
 <option value="MT">MT</option>
 <option value="PA">PA</option>
 <option value="PB">PB</option>
 <option value="PE">PE</option>
 <option value="PI">PI</option>
 <option value="PR">PR</option>
 <option value="RJ">RJ</option>
 <option value="RN">RN</option>
 <option value="RO">RO</option>
 <option value="RR">RR</option>
 <option value="RS">RS</option>
 <option value="SC">SC</option>
 <option value="SP">SP</option>
 <option value="TO">TO</option>
</select><br />
Escolha seu sexo : <input type="radio" value="masculino" name="sexo" checked="checked"/>Masculino
<input type="radio" value="feminino" name="sexo" />Feminino<br />
<input type="submit" name="Pegar" value="Gravar" />
<input type="reset" value="Limpar" />

</form>

quando termino de pegar as informações com este arquivo

<?php
if(isset($_POST['Pegar'])==1){ //verifico se foi clicado o botao
$nome = $_POST['nome']; //aki pegos os valores
$email = $_POST['email'];
$ano = $_POST['ano'];
$estados = $_POST['estados'];
$sexo = $_POST['sexo'];

fopen("dados.txt","w+"); //aki abro o arquivo se nao existir cria $content = $nome."/n"; //aki é o que eu quero colocar no dados.txt

$content .= $email."/n";
$content .= $ano."/n";
$content .= $estados."/n";
$content .= $sexo."/n";

fwrite("dados.txt","w+",$content); //tentei assim e nao consegui } ?>

alguem me ajuda?

consegui dei uma modificada no codigo

coloquei assim

<?php
if(isset($_POST['Pegar'])==1){
$nome = $_POST['nome'];
$email = $_POST['email'];
$ano = $_POST['ano'];
$estados = $_POST['estados'];
$sexo = $_POST['sexo'];

$fp = fopen("dados.txt","w"); //isso dentro de uma variavel

echo $nome;
echo $email;
echo $ano;
echo $estados;
echo $sexo;
$content = $nome."/n";
$content .= $email."/n";
$content .= $ano."/n";
$content .= $estados."/n";
$content .= $sexo."/n";

fwrite($fp,$content); //aki chamei a variavel com o conteudo ai foi xD } ?>