23 lines
202 B
PHP
23 lines
202 B
PHP
<?php
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$pre = 0;
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$cur = 1;
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$nex = 0;
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$s = 0;
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$cap = 4000000;
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while ($cur <= $cap) {
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$nex = $pre + $cur;
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$pre = $cur;
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$cur = $nex;
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if ($cur % 2 == 0) {
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$s = $s + $cur;
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}
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}
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echo $s . "\n";
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?>
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