40 lines
857 B
PHP
40 lines
857 B
PHP
// 32-bit builds of PHP: Integers can be from -2147483648 to 2147483647
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// 64-bit builds of PHP: Integers can be from -9223372036854775808 to 9223372036854775807
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function middlethree($integer)
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{
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$int = (int)str_replace('-','',$integer);
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$length = strlen($int);
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if(is_int($int))
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{
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if($length >= 3)
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{
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if($length % 2 == 1)
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{
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$middle = floor($length / 2) - 1;
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return substr($int,$middle, 3);
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}
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else
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{
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return 'The value must contain an odd amount of digits...';
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}
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}
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else
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{
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return 'The value must contain at least three digits...';
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}
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}
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else
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{
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return 'The value does not appear to be an integer...';
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}
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}
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$numbers = array(123, 12345, 1234567, 987654321, 10001, -10001, -123, -100, 100, -12345, 1, 2, -1, -10, 2002, -2002, 0);
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foreach($numbers as $nums)
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{
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echo $nums.' : '.middlethree($nums). '<br>';
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}
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