blocks|key|1557795|text|PHP+int大小与平台相关。有一个名为unpack()的函数，它基本上允许将不同类型的数据从二进制字符串转换为PHP变量。似乎将其存储为64位的唯一方法是将其存储为字符串。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1557796|我在http://www.mysqlperformanceblog.com/2007/03/27/integers-in-php-running-with-scissors-and-portability/上找到了以下代码：|offset|length|1557797|///+portably+build+64bit+id+from+32bit+hi+and+lo+parts
function+_Make64+(+$hi,+$lo+)
{

++++++++//+on+x64,+we+can+just+use+int
++++++++if+(+((int)4294967296)!=0+)
++++++++++++return+(((int)$hi)<<32)+%2B+((int)$lo);

++++++++//+workaround+signed/unsigned+braindamage+on+x32
++++++++$hi+=+sprintf+(+"%25u",+$hi+);
++++++++$lo+=+sprintf+(+"%25u",+$lo+);

++++++++//+use+GMP+or+bcmath+if+possible
++++++++if+(+function_exists("gmp_mul")+)
++++++++++++return+gmp_strval+(+gmp_add+(+gmp_mul+(+$hi,+"4294967296"+),+$lo+)+);

++++++++if+(+function_exists("bcmul")+)
++++++++++++return+bcadd+(+bcmul+(+$hi,+"4294967296"+),+$lo+);

++++++++//+compute+everything+manually
++++++++$a+=+substr+(+$hi,+0,+-5+);
++++++++$b+=+substr+(+$hi,+-5+);
++++++++$ac+=+$a*42949;+//+hope+that+float+precision+is+enough
++++++++$bd+=+$b*67296;
++++++++$adbc+=+$a*67296%2B$b*42949;
++++++++$r4+=+substr+(+$bd,+-5+)+%2B++%2B+substr+(+$lo,+-5+);
++++++++$r3+=+substr+(+$bd,+0,+-5+)+%2B+substr+(+$adbc,+-5+)+%2B+substr+(+$lo,+0,+-5+);
++++++++$r2+=+substr+(+$adbc,+0,+-5+)+%2B+substr+(+$ac,+-5+);
++++++++$r1+=+substr+(+$ac,+0,+-5+);
++++++++while+(+$r4>100000+)+{+$r4-=100000;+$r3%2B%2B;+}
++++++++while+(+$r3>100000+)+{+$r3-=100000;+$r2%2B%2B;+}
++++++++while+(+$r2>100000+)+{+$r2-=100000;+$r1%2B%2B;+}

++++++++$r+=+sprintf+(+"%25d%2505d%2505d%2505d",+$r1,+$r2,+$r3,+$r4+);
++++++++$l+=+strlen($r);
++++++++$i+=+0;
++++++++while+(+$r[$i]=="0"+&&+$i<$l-1+)
++++++++++++$i%2B%2B;
++++++++return+substr+(+$r,+$i+);+++++++++
++++}

++++list(,$a)+=+unpack+(+"N",+"\xff\xff\xff\xff"+);
++++list(,$b)+=+unpack+(+"N",+"\xff\xff\xff\xff"+);
++++$q+=+_Make64($a,$b);
++++var_dump($q);|code-block|syntax|javascript|1557798|entityMap|0|LINK|mutability|MUTABLE|url|http://www.mysqlperformanceblog.com/2007/03/27/integers-in-php-running-with-scissors-and-portability/^0|0|2|2T|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@$D|U|E|V|1|W]]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

PHP int size is platform-dependent. There is a function called unpack() which essentially allows to convert different types of data from binary strings to PHP variables. It seems to be the only way to store as 64 bit is to store it as a string.

I found the following code at:
<a href="http://www.mysqlperformanceblog.com/2007/03/27/integers-in-php-running-with-scissors-and-portability/" rel="noreferrer">http://www.mysqlperformanceblog.com/2007/03/27/integers-in-php-running-with-scissors-and-portability/</a>

<pre><code>/// portably build 64bit id from 32bit hi and lo parts
function _Make64 ( $hi, $lo )
{

 // on x64, we can just use int
 if ( ((int)4294967296)!=0 )
 return (((int)$hi)&lt;&lt;32) + ((int)$lo);

 // workaround signed/unsigned braindamage on x32
 $hi = sprintf ( "%u", $hi );
 $lo = sprintf ( "%u", $lo );

 // use GMP or bcmath if possible
 if ( function_exists("gmp_mul") )
 return gmp_strval ( gmp_add ( gmp_mul ( $hi, "4294967296" ), $lo ) );

 if ( function_exists("bcmul") )
 return bcadd ( bcmul ( $hi, "4294967296" ), $lo );

 // compute everything manually
 $a = substr ( $hi, 0, -5 );
 $b = substr ( $hi, -5 );
 $ac = $a*42949; // hope that float precision is enough
 $bd = $b*67296;
 $adbc = $a*67296+$b*42949;
 $r4 = substr ( $bd, -5 ) + + substr ( $lo, -5 );
 $r3 = substr ( $bd, 0, -5 ) + substr ( $adbc, -5 ) + substr ( $lo, 0, -5 );
 $r2 = substr ( $adbc, 0, -5 ) + substr ( $ac, -5 );
 $r1 = substr ( $ac, 0, -5 );
 while ( $r4&gt;100000 ) { $r4-=100000; $r3++; }
 while ( $r3&gt;100000 ) { $r3-=100000; $r2++; }
 while ( $r2&gt;100000 ) { $r2-=100000; $r1++; }

 $r = sprintf ( "%d%05d%05d%05d", $r1, $r2, $r3, $r4 );
 $l = strlen($r);
 $i = 0;
 while ( $r[$i]=="0" &amp;&amp; $i&lt;$l-1 )
 $i++;
 return substr ( $r, $i ); 
 }

 list(,$a) = unpack ( "N", "\xff\xff\xff\xff" );
 list(,$b) = unpack ( "N", "\xff\xff\xff\xff" );
 $q = _Make64($a,$b);
 var_dump($q);
</code></pre>

blocks|key|1557829|text|也许您可以使用GMP或BCMath扩展。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1557830|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/book.gmp.php|1|http://www.php.net/manual/en/book.bc.php^0|7|3|0|B|6|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

Maybe you could use either the <a href="http://www.php.net/manual/en/book.gmp.php" rel="nofollow noreferrer">GMP</a> or <a href="http://www.php.net/manual/en/book.bc.php" rel="nofollow noreferrer">BCMath</a> extension.

blocks|key|1342351|text|本机64位整数需要64位硬件和64位版本的PHP。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1342352|在32位硬件上：|1342353|$+php+-r+'echo+PHP_INT_MAX;'
2147483647|code-block|syntax|javascript|1342354|在64位硬件上：|1342355|$+php+-r+'echo+PHP_INT_MAX;'
9223372036854775807|1342356|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Native 64-bit integers require 64-bit hardware AND the 64-bit version of PHP.

On 32-bit hardware:

<pre><code>$ php -r 'echo PHP_INT_MAX;'
2147483647
</code></pre>

On 64-bit hardware:

<pre><code>$ php -r 'echo PHP_INT_MAX;'
9223372036854775807
</code></pre>

blocks|key|1342396|text|现在你应该得到PHP7-完全一致的64位支持。不仅是整数，还有所有的fstat、I/O等。Windows上的PHP7是真正的64位。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1342397|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Now you should get PHP 7 - fully consistent 64-bit support. Not only integers, but also all the fstat, I/O, etc. PHP 7 on Windows is true 64-bit.

How can I have a 64-bit integer in PHP?

It seems like it is not by a config file, but rather it might be a compile-time option, and it depends on the platform.

How can I have a 64-bit integer in PHP?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在PHP中我怎么能有一个64位的整数？它似乎不是通过配置文件，而是可能是一个编译时选项，它取决于平台。

问在PHP中我怎么能有一个64位的整数？
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