27 lines
596 B
PHP
27 lines
596 B
PHP
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<?php
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function pandigital($number) {
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$array = count_chars($number,1);
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ksort($array);
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if($array == array(49=>1,50=>1,51=>1,52=>1,53=>1,54=>1,55=>1,56=>1,57=>1)) { return true;} else { return false; }
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}
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while(true) {
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$value++;
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$test = array(1,2);
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$key = 2;
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while(true) {
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$new = array();
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foreach($test as $p) {
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$new[] = $value * $p;
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}
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$var = implode('',$new);
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if(strlen($var) != 9) { break; }
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if(strlen($var) == 9 AND pandigital($var)) { $good[] = $var; break; }
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$test[] = $key++;
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}
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if($value > 9999) { break; }
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}
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rsort($good);
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echo $good[0];
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