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37 lines
785 B
PHP
37 lines
785 B
PHP
<?php
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namespace CubiStore\Web\Utils;
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use RuntimeException;
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class Bytes
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{
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public static function readUint2LE($bytes, $offset = 0)
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{
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return static::unpackFirst('v', $bytes, $offset, 'int2');
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}
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public static function readUint4LE($bytes, $offset = 0)
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{
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return static::unpackFirst('V', $bytes, $offset, 'int4');
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}
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public static function readUint8LE($bytes, $offset = 0)
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{
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return static::unpackFirst('P', $bytes, $offset, 'int8');
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}
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private static function unpackFirst($format, $data, $offset, $what = 'bytes')
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{
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$result = unpack($format, $data, $offset);
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if (!$result) {
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throw new RuntimeException("Failed reading $what from buffer");
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}
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return reset($result);
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}
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}
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