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What's better at freeing memory with PHP: unset() or $var = null
...that unset man page don't include that section anymore)
Note that until php5.3, if you have two objects in circular reference, such as in a parent-child relationship, calling unset() on the parent object will not free the memory used for the parent reference in the child object. (Nor will the memory...
Upgrading PHP in XAMPP for Windows?
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I needed to update my php from 5.3.8 to 5.3.29. (both Thread Safe) on Windows
Steps I did:
Back-up my initial php folder, under xampp.
Downloaded zip from here
http://windows.php.net/download/#php-5.3-ts-VC9-x86
Unpack that zip into xampp folder.
Copied...
Zero-pad digits in string
...ution using str_pad:
str_pad($digit,2,'0',STR_PAD_LEFT);
Benchmark on php 5.3
Result str_pad : 0.286863088608
Result sprintf : 0.234171152115
Code:
$start = microtime(true);
for ($i=0;$i<100000;$i++) {
str_pad(9,2,'0',STR_PAD_LEFT);
str_pad(15,2,'0',STR_PAD_LEFT);
str_pad(100,2,'0'...
How to fix error with xml2-config not found when installing PHP from sources?
When I try to install php 5.3 stable from source on Ubuntu (downloading compressed installation file from http://www.php.net/downloads.php ) and I run ./configure I get this error:
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How do I read any request header in PHP
...ds, which include general-header (section 4.5), request-header (section 5.3), response-header (section 6.2), and entity-header (section 7.1) fields, follow the same generic format as that given in Section 3.1 of RFC 822 [9]. Each header field consists of a name followed by a colon (":") ...
Modify SVG fill color when being served as Background-Image
...-1.6-1.3c-0.2-0.3-0.4-0.5-0.6-0.8c-0.2-0.4-0.7-0.3-0.8,0.3
c-0.5,2.5,0.3,5.3,2.1,7.1c4.4,4.5,13.9,1.7,13.4-5.1c-0.2-2.9-3.2-4.2-3.3-7.1C19.6,10,19.1,9.6,18.7,10.1z"/>
</svg>');
}
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Import regular CSS file in SCSS file?
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Starting in v3.5.3, libsass warns that this is non-standard behavior and should not be relied upon. (Instead "Use a custom importer to maintain this behaviour.") github.com/sass/libsass/releases/tag/3.5.3
– jacobq
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How can you search Google Programmatically Java API [closed]
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In the Terms of Service of google we can read:
5.3 You agree not to access (or attempt to access) any of the Services by any means other than through the interface that is provided by Google, unless you have been specifically allowed to do so in a separate agreement with ...
PHP Difference between array() and []
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It seems 5.3.24 supports this syntax too. (couldn't confirm directly)
– Alberto
Dec 8 '14 at 18:22
3
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第一个Hello,OS World操作系统 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...基本原理：计算机CPU只执行二进制指令，我们使用的开发语言开发出的程序最终由相应的编译器编译为二进制指令，二进制中包含程序相关的数据、代码指令（用我们最常见的公式描述就是：程序=数据+算法）。CPU读取相应的指...