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Eksistē arī vēl eval() variants un vēl daži interesantāki

${$a."_".$i} = substr($input,$i,1);

$myarray = array(); // php semikols aizmirsās :)
do{
 $i++;
 $myarray[$a."_".$i] = substr($input,$i,1);
}while($i <= 4);
extract($myarray);

Edited by marcis
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Ir taču tāda lieta kā masīvi:

function check_captcha($input)
{
 $i = -1;
 $a = array();
 do
 {
   $i++;
   $a[$i] = $input[$i];
 }
 while($i <= 4);
}

check_captcha('1234');

 

Un kamdēļ no stringa jāvelk atsevišķi čari ārā atsevišķos mainīgos? Lieto $input[4] sintaksi, kur 4 ir indekss stringā.

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