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内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...碎片
缓存本地化友好
通用性，兼容性，可移植性，易调试
现状
目前大部分服务端程序使用glibc提供的malloc/free系列函数，而glibc使用的ptmalloc2在性能上远远弱后于google的tcmalloc和facebook的jemalloc。 而且后两者只需要使用LD_PREL...
十张图读懂 PHP、Python、 Ruby 三大语言的差异 - 更多技术 - 清泛网 - 专...
十张图读懂 PHP、Python、 Ruby 三大语言的差异php-vs-python-vs-ruby-comparison图1、PHP vs Python vs Ruby: 市场份额Winner - PHP图2、PHP vs Python vs Ruby: 主流网站使用情况Winner - 平局图3、PHP v 图1、PHP vs Python vs Ruby: 市场份额
Winner - PHP
图2、P...
What's the maximum value for an int in PHP?
... work with very big numbers, what's the largest int value you can store in PHP?
8 Answers
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PHP parse/syntax errors; and how to solve them
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What are the syntax errors?
PHP belongs to the C-style and imperative programming languages. It has rigid grammar rules, which it cannot recover from when encountering misplaced symbols or identifiers. It can't guess your coding intentions.
Most impo...
How do I pass JavaScript variables to PHP?
I want to pass JavaScript variables to PHP using a hidden input in a form.
14 Answers
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CodeIgniter removing index.php from url
My current urls look like this [mysite]index.php/[rest of the slug] .
I want to strip index.php from these urls.
31 A...
What are the differences in die() and exit() in PHP?
What are the differences between die() and exit() functions in PHP?
16 Answers
16
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How to create cron job using PHP?
...ant to create a cron job that will execute my code every minute. I'm using PHP to create it. It is not working.
12 Answers
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Why would one omit the close tag?
I keep reading it is poor practice to use the PHP close tag ?> at the end of the file. The header problem seems irrelevant in the following context (and this is the only good argument so far):
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Problems with lib-icu dependency when installing Symfony 2.3.x via Composer
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update your php-intl extension, that's where the icu error comes from!
sudo aptitude install php5-intl // i.e. ubuntu
brew install icu4c // osx
check the extension is enabled and properly c...