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42 lines
1.0 KiB
42 lines
1.0 KiB
--TEST--
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numeric literal classifier style regex and digit extraction
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--FILE--
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<?php
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function strip_numeric_underscores(string $value): string
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{
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return str_replace('_', '', $value);
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}
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function is_big_int_literal_string(string $rawValue): bool
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{
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$clean = strip_numeric_underscores($rawValue);
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if (!preg_match('/^\d+$/', $clean)) {
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return false;
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}
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return strlen(ltrim($clean, '0')) >= 19;
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}
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function is_decimal_literal_string(string $rawValue): bool
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{
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$clean = strip_numeric_underscores($rawValue);
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if (!preg_match('/[\.eE]/', $clean)) {
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return false;
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}
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$digits = preg_replace('/[^0-9]/', '', $clean);
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return strlen(ltrim($digits, '0')) >= 16;
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}
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function main(): void
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{
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var_dump(is_big_int_literal_string('9_223_372_036_854_775_808'));
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var_dump(is_big_int_literal_string('0x10000000000000000'));
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var_dump(is_decimal_literal_string('123_456_789_012_345.6'));
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var_dump(is_decimal_literal_string('123.45'));
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}
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?>
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--EXPECT--
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bool(true)
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bool(false)
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bool(true)
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bool(false)
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