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@ -27,11 +27,18 @@ class Base62
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return $chars;
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}
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public static function getSpecialChar($char, $default = null)
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{
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if ($default == null) {
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$default = $char;
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}
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return $char == 'i' ? "ia" : ($char == '+' ? "ib" : ($char == '/' ? "ic" : $default));
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}
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public static function encode($string)
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{
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$encodes = self::getCharArray(self::ENCODES);
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$bytes = self::stringToBytes($string);
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$pos = 0;
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$val = 0;
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$result = [];
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@ -40,21 +47,14 @@ class Base62
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$pos += 8;
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while ($pos > 5) {
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$char = $encodes[$val >> ($pos -= 6)];
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$result[] = (
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$char == 'i' ? "ia" :
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$char == '+' ? "ib" :
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$char == '/' ? "ic" : $char
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);
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$encodeChar = self::getSpecialChar($char);
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$result[] = $encodeChar;
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$val &= ((1 << $pos) - 1);
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}
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}
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if ($pos > 0) {
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$char = $encodes[$val << (6 - $pos)];
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$result[] = (
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$char == 'i' ? "ia" :
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$char == '+' ? "ib" :
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$char == '/' ? "ic" : $char
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);
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$result[] = self::getSpecialChar($char);
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}
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return implode('', $result);
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}
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@ -72,8 +72,8 @@ class Base62
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$char = $chars[++$i];
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$char =
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$char == 'a' ? 'i' :
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$char == 'b' ? '+' :
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$char == 'c' ? '/' : $chars[--$i];
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($char == 'b' ? '+' :
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($char == 'c' ? '/' : $chars[--$i]));
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}
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$val = ($val << 6) | $decodes[$char];
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$pos += 6;
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