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What is the difference between an interface and abstract class?
...hat you think they are.
In Java, this rule is strongly enforced, while in PHP, interfaces are abstract classes with no method declared.
In Python, abstract classes are more a programming trick you can get from the ABC module and is actually using metaclasses, and therefore classes. And interfaces ...
Send email using the GMail SMTP server from a PHP page
I am trying to send an email via GMail's SMTP server from a PHP page, but I get this error:
14 Answers
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How to specify in crontab by what user to run script? [closed]
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cron on *nix systems doesn't require a user to login in order to run the jobs specified in a specific user's crontab.
– Mike
Mar 30 '15 at 13:45
2
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How do you reindex an array in PHP?
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If you don't care about order you can also just sort($array);
– Peter M. Elias
Sep 4 '12 at 16:13
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Remove excess whitespace from within a string
...xtra whitespace for you - make sure you have "\" before "s" :) some online-php-testing pages remove it :)
– jave.web
Jul 3 '16 at 11:27
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Manipulate a url string by adding GET parameters
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Basic method
$query = parse_url($url, PHP_URL_QUERY);
// Returns a string if the URL has parameters or NULL if not
if ($query) {
$url .= '&category=1';
} else {
$url .= '?category=1';
}
More advanced
$url = 'http://example.com/search?keyword=test&...
Bash Templating: How to build configuration files from templates with Bash?
...lt;<EOF
<Location ${STATUS_URI}>
SetHandler server-status
Order deny,allow
Deny from all
Allow from ${MONITOR_IP}
</Location>
EOF
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How to add new column to MYSQL table?
...text box as such in the SQL statement. You must make sure you escape it in order to avoid an SQL injection vulnerability.
– Costi Ciudatu
Feb 1 '14 at 21:56
2
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How can I capture the result of var_dump to a string?
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Use output buffering:
<?php
ob_start();
var_dump($someVar);
$result = ob_get_clean();
?>
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ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...层传输之上提供完全相同的行为。
这种方法存在两个问题：
一，在特定的传输之上建立类TCP的封装实际上使得传输成为多余的了。如果这种方法的行为类似于TCP，那么为什么一开始就不用TCP呢？（性能特性排除在这个规...