Avoid E_NOTICE and E_WARNING in PHP 7.1 #134
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Since PHP 7.1, E_NOTICE and E_WARNING are produced if unexpected characters are found when implicitly converting a string to value. Columns with relative width now produce errors when used in arithmetic operations. A workaround is to explicitly cast string to value before doing arithmetic operations. See https://wiki.php.net/rfc/invalid_strings_in_arithmetic
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Since PHP 7.1, E_NOTICE and E_WARNING are produced if unexpected characters are found when implicitly converting a string to value. Columns with relative width now produce errors when used in arithmetic operations. A workaround is to explicitly cast string to value before doing arithmetic operations.
See https://wiki.php.net/rfc/invalid_strings_in_arithmetic