One Variable memory size in Linux system for curl and php

Dear Expert,

I run following curl php script to grab 36meg data from remote server site and save it
into one varaible like $htm and $file_url.  And the error report: Out of memory in my_curl function
at $htm=curl_exec($url)
Is it not allowed I put the data at such big size into one variable ?
If not, how can I put 32M  data into one variable, i know there is something related
to curl and memory reallocation. Any one has that code, please advise for me for a start
I have checked phpinfo() my  php max memory limit is 128Meg and also
add php_value memor_limit 120M in my .htaccess file

<?php
$file_url=my_curl("wwww.example.com","" , 3000, TRUE);

function my_curl
( $url
, $get_array=array()
, $timeout=3
, $error_report=TRUE
)
{
    // PREPARE THE ARGUMENT STRING IF NEEDED
  //  $get_string = '';
  //  foreach ($get_array as $key => $val)
  //  {
  //      $get_string
 //       = $get_string
 //       . urlencode($key)
  //      . '='
  //      . urlencode($val)
  //      . '&';
  //  }
  //  $get_string = rtrim($get_string, '&');
    if (!empty($get_string)) $url .= '?' . $get_string;
  $curl = curl_init();
    // HEADERS AND OPTIONS APPEAR TO BE A FIREFOX BROWSER REFERRED BY GOOGLE
    $header[] = "Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
    $header[] = "Cache-Control: max-age=0";
    $header[] = "Connection: keep-alive";
    $header[] = "Keep-Alive: 300";
    $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
    $header[] = "Accept-Language: en-us,en;q=0.5";
    $header[] = "Pragma: "; // BROWSERS USUALLY LEAVE BLANK
    // SET THE CURL OPTIONS - SEE http://php.net/manual/en/function.curl-setopt.php
    curl_setopt( $curl, CURLOPT_URL,            $url  );
    curl_setopt( $curl, CURLOPT_USERAGENT,      'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6'  );
    curl_setopt( $curl, CURLOPT_HTTPHEADER,     $header  );
    curl_setopt( $curl, CURLOPT_REFERER,        'http://www.google.com'  );
    curl_setopt( $curl, CURLOPT_ENCODING,       'gzip,deflate'  );
    curl_setopt( $curl, CURLOPT_AUTOREFERER,    TRUE  );
    curl_setopt( $curl, CURLOPT_RETURNTRANSFER, TRUE  );
  //  curl_setopt( $curl, CURLOPT_FOLLOWLOCATION, TRUE  );
    curl_setopt( $curl, CURLOPT_TIMEOUT,        $timeout  );
    // RUN THE CURL REQUEST AND GET THE RESULTS
    $htm = curl_exec($curl);

    // ON FAILURE HANDLE ERROR MESSAGE
      //global $track; // declaring global variable
      
    if ($htm === FALSE)
    {
        if ($error_report)
        {
            $err = curl_errno($curl);
            $inf = curl_getinfo($curl);
           // echo "FAILC: $url TIMEOUT=$timeout, CURL_ERRNOC=$err";
            var_dump($inf);
        }
            
      
        curl_close($curl);
            
        return FALSE;
    }

    // ON SUCCESS RETURN XML / HTML STRING
    curl_close($curl);
    return $htm;
}
?>

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configuration

PHP Core

Directive => Local Value => Master Value
allow_call_time_pass_reference => On => On
allow_url_fopen => On => On
allow_url_include => Off => Off
always_populate_raw_post_data => Off => Off
arg_separator.input => & => &
arg_separator.output => & => &
asp_tags => Off => Off
auto_append_file => no value => no value
auto_globals_jit => On => On
auto_prepend_file => /usr/lib/php/head.php => /usr/lib/php/head.php
browscap => no value => no value
default_charset => no value => no value
default_mimetype => text/html => text/html
define_syslog_variables => Off => Off
detect_unicode => On => On
disable_classes => no value => no value
disable_functions => symlink,shell_exec,exec,proc_close,proc_open,popen,system,dl,passthru,escapeshellarg,escapeshellcmd,show_source => symlink,shell_exec,exec,proc_close,proc_open,popen,system,dl,passthru,escapeshellarg,escapeshellcmd,show_source
display_errors => STDOUT => STDOUT
display_startup_errors => Off => Off
doc_root => no value => no value
docref_ext => no value => no value
docref_root => no value => no value
enable_dl => Off => Off
error_append_string => no value => no value
error_log => error_log => error_log
error_prepend_string => no value => no value
error_reporting => 6135 => 6135
expose_php => On => On
extension_dir => /usr/local/lib/php/extensions/no-debug-non-zts-20060613 => /usr/local/lib/php/extensions/no-debug-non-zts-20060613
file_uploads => On => On
highlight.bg => <font style="color: #FFFFFF">#FFFFFF</font> => <font style="color: #FFFFFF">#FFFFFF</font>
highlight.comment => <font style="color: #FF8000">#FF8000</font> => <font style="color: #FF8000">#FF8000</font>
highlight.default => <font style="color: #0000BB">#0000BB</font> => <font style="color: #0000BB">#0000BB</font>
highlight.html => <font style="color: #000000">#000000</font> => <font style="color: #000000">#000000</font>
highlight.keyword => <font style="color: #007700">#007700</font> => <font style="color: #007700">#007700</font>
highlight.string => <font style="color: #DD0000">#DD0000</font> => <font style="color: #DD0000">#DD0000</font>
html_errors => Off => Off
ignore_repeated_errors => On => On
ignore_repeated_source => On => On
ignore_user_abort => Off => Off
implicit_flush => On => On
include_path => .:/usr/lib/php:/usr/local/lib/php => .:/usr/lib/php:/usr/local/lib/php
log_errors => On => On
log_errors_max_len => 1024 => 1024
magic_quotes_gpc => On => On
magic_quotes_runtime => Off => Off
magic_quotes_sybase => Off => Off
mail.force_extra_parameters => no value => no value
max_execution_time => 0 => 0
max_file_uploads => 20 => 20
max_input_nesting_level => 64 => 64
max_input_time => -1 => -1
memory_limit => 128M => 128M
open_basedir => no value => no value
output_buffering => 0 => 0
output_handler => no value => no value
post_max_size => 128M => 128M
precision => 12 => 12
realpath_cache_size => 16K => 16K
realpath_cache_ttl => 120 => 120
register_argc_argv => On => On
register_globals => Off => Off
register_long_arrays => On => On
report_memleaks => On => On
report_zend_debug => Off => Off
safe_mode => Off => Off
safe_mode_exec_dir => /usr/local/php/bin => /usr/local/php/bin
safe_mode_gid => Off => Off
safe_mode_include_dir => no value => no value
sendmail_from => no value => no value
sendmail_path => /usr/sbin/sendmail -t -i => /usr/sbin/sendmail -t -i
serialize_precision => 100 => 100
short_open_tag => On => On
SMTP => localhost => localhost
smtp_port => 25 => 25
sql.safe_mode => Off => Off
track_errors => Off => Off
unserialize_callback_func => no value => no value
upload_max_filesize => 128M => 128M
upload_tmp_dir => /tmp => /tmp
user_dir => no value => no value
variables_order => EGPCS => EGPCS
xmlrpc_error_number => 0 => 0
xmlrpc_errors => Off => Off
y2k_compliance => On => On
zend.ze1_compatibility_mode => Off => Off

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my .htaccess file 
# -FrontPage-


<Limit GET POST>
order deny,allow
deny from all
allow from all
</Limit>
<Limit PUT DELETE>
order deny,allow
deny from all
</Limit>
php_value memory_limit 120M
AuthUserFile /home/aab/public_html/_vti_pvt/service.pwd
AuthGroupFile /home/aab/public_html/_vti_pvt/service.grp
AuthName aaa.com
IndexIgnore .htaccess */.??* *~ *# */HEADER* */README* */_vti*

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