Why does PHP cURL drop numeric keys? -


i'm trying use curl post array containing numeric indices, curl_setopt dropping numeric indices. i'm using php version 5.3.29.

here's simple script setup illustrate happening:

<?php  $is_curled = isset($_get['curl']) ? !!$_get['curl'] : false;  if (!$is_curled) {     $url = $_server['script_uri'] . '?curl=1';      $_post['1'] = 'test1234';               // dropped because numeric     $_post[234] = 'test3211';               // dropped because numeric     $_post['t3'] = 'test1325';              // not dropped     $_post['4t'] = 'test6347';              // not dropped     $_post['_5'] = 'test3235';              // not dropped     $_post['*4'] = 'test7432';              // not dropped gets next post value     $_post["3"] = 'test8521';               // dropped because numeric     $_post['"2"'] = 'test9472';             // not dropped because string "2"     $_post["'1'"] = 'test2741';             // not dropped because string '1' gets next post value     $_post["10"] = 'test1738';              // dropped because numeric     $_post['test_field'] = 'test6123';      // not dropped      $ch = curl_init();      curl_setopt($ch, curlopt_url, $url);     curl_setopt($ch, curlopt_postfields, $_post);       // drops numeric keys      echo '<pre>' . print_r($_post, 1) . '</pre>';      curl_exec($ch);      curl_close($ch);  } else {     echo '<pre>' . print_r($_post, 1) . '</pre>';  }  ?>

here output:

array (     [1] => test1234     [234] => test3211     [t3] => test1325     [4t] => test6347     [_5] => test3235     [*4] => test7432     [3] => test8521     ["2"] => test9472     ['1'] => test2741     [10] => test1738     [test_field] => test6123 ) array (     [t3] => test1325     [4t] => test6347     [_5] => test3235     [*4] => test8521     ["2"] => test9472     ['1'] => test1738     [test_field] => test6123 )

what's weirder, not indices dropped, values appear shifted in ones next ones dropped.

assuming sending content type application/x-www-form-urlencoded means you're sending html form data. (php curl defaults content type w3c recommended default https://www.w3.org/tr/html401/interact/forms.html#h-17.13.4).

according spec, name tokens (a.k.a. post , get parameter names )have start letter: https://www.w3.org/tr/html4/types.html#h-6.2

id , name tokens must begin letter ([a-za-z]) , may followed number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), , periods (".").

this why it's not being handled expect, because starting param in post body number indicated content type unsupported.


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