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73 lines
2 KiB
PHP
73 lines
2 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace JKingWeb\Arsse\Misc;
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class ValueInfo {
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// universal
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const VALID = 1 << 0;
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const NULL = 1 << 1;
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// integers
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const ZERO = 1 << 2;
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const NEG = 1 << 3;
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// strings
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const EMPTY = 1 << 2;
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const WHITE = 1 << 3;
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static public function int($value): int {
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$out = 0;
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// check if the input is null
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if (is_null($value)) {
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$out += self::NULL;
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}
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// normalize the value to an integer or float if possible
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if (is_string($value)) {
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if (strval(@intval($value))===$value) {
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$value = (int) $value;
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} elseif (strval(@floatval($value))===$value) {
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$value = (float) $value;
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}
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// the empty string is equivalent to null when evaluating an integer
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if (!strlen((string) $value)) {
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$out += self::NULL;
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}
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}
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// if the value is not an integer or integral float, stop
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if (!is_int($value) && (!is_float($value) || fmod($value, 1))) {
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return $out;
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}
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// mark validity
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$value = (int) $value;
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$out += self::VALID;
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// mark zeroness
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if(!$value) {
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$out += self::ZERO;
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}
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// mark negativeness
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if ($value < 0) {
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$out += self::NEG;
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}
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return $out;
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}
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static public function str($value): int {
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$out = 0;
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// check if the input is null
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if (is_null($value)) {
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$out += self::NULL;
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}
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// if the value is not scalar, it cannot be valid
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if (!is_scalar($value)) {
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return $out;
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}
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// mark validity
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$out += self::VALID;
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if (!strlen((string) $value)) {
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// mark emptiness
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$out += self::EMPTY;
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} elseif (!strlen(trim((string) $value))) {
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// mark whitespacedness
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$out += self::WHITE;
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}
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return $out;
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}
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}
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