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Fixed php error for 8.x in secureimage.php
Signed-off-by: Janos SUTO <sj@acts.hu>
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@ -1438,7 +1438,7 @@ class Securimage
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$length = strlen($code['display']);
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for($i = 0; $i < $length; ++$i) {
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$letter = $code['display']{$i};
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$letter = $code['display'][$i];
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$letters[] = $letter;
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}
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}
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