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    <p>On some 32bit systems PHP will take the memory settings like <code>2000M</code> or <code>2G</code> and convert it to the integer number of bytes by not performing a boundary check. A number starting at <code>2G</code> or <code>2048M</code> will be <code>-2147483648</code> bytes then.</p> <p>Some PHP versions cap this at the top, so it won't go into negative numbers (that is the 32 bit signed integer limit).</p> <p>If you want to achieve the maximum possible number of bytes on such a system then, use <strong><code>2147483647</code></strong>. This is equal to two gigabytes minus one byte.</p> <p>Alternatively if you need to deal with large data, consider a 64bit system.</p> <p>Additionally you should consider the following:</p> <p><a href="http://php.net/ini.core#ini.post-max-size" rel="noreferrer">According to the PHP manual</a>, the <code>memory_limit</code> setting is the more important one. If it does not offer enough memory, the post-data size-check then will pass, but PHP would not have enough memory to actually handle the post-data. You will get another error than, that the memory exceeded. So when you configure your PHP, take care that <code>post_max_size</code> is smaller than <code>memory_limit</code>.</p> <p>In your example the <code>memory_limit</code> is <code>128M</code>, so it can not process post-data of a size larger than ~128 Megabyte.</p> <p>(<a href="http://hakre.wordpress.com/2011/06/09/protocol-of-some-php-memory-stretching-fun/" rel="noreferrer">This blog post shows what can happen and how large memory settings on 32bit and 64bit systems behave</a>)</p>
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    1. POPHP Warning: POST Content-Length of 113 bytes exceeds the limit of -1988100096 bytes in Unknown
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    1. COSo what do you reckon I should change the memory-limit to and post-max-size should I increase memory or change post size?
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    2. COdaza166: How large are the files you want to upload? How many files at once should be uploaded?
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    3. CO6 images can be uploaded at once, size depends on photo could be just over 1MB most people upload. Photo that caused a problem the other day was a jpeg 982.6 KB (1006188 bytes)
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