月份: 2021 年 6 月

PHP_EOL is newline character in a cross-platform-compatible

PHP_EOL = cross-platform-compatible newline character

PHP_EOL is ostensibly used to find the newline character in a cross-platform-compatible way, so it handles DOS/Unix issues.

Note that PHP_EOL represents the endline character for the current system. For instance, it will not find a Windows endline when executed on a unix-like system.

Example (Save the $DataArray to $filename):

file_put_contents($filename, implode(PHP_EOL, $DataArray), LOCK_EX);
Reference:
Adam Bellaire (2008), https://stackoverflow.com/questions/128560/when-do-i-use-the-php-constant-php-eol

Remove empty array elements

// PHP 7.4 and later
print_r(array_filter($linksArray, fn($value) => !is_null($value) && $value !== ''));

// PHP 5.3 and later
print_r(array_filter($linksArray, function($value) { return !is_null($value) && $value !== ''; }));

// PHP < 5.3
print_r(array_filter($linksArray, create_function('$value', 'return $value !== "";')));
Reference:

BoltClock (2020), https://stackoverflow.com/questions/3654295/remove-empty-array-elements

Redirect non-www to www in .htaccess

Change your configuration to this (add a slash):

RewriteCond %{HTTP_HOST} ^example.com$ [NC]
RewriteRule (.*) http://www.example.com/$1 [R=301,L]

Or the solution outlined below will work for any domain:

RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]

If you need to support http and https and preserve the protocol choice try the following:

RewriteRule ^login\$ https://www.%{HTTP_HOST}/login [R=301,L]

Source :

Randall Hunt(2021), https://stackoverflow.com/questions/12050590/redirect-non-www-to-www-in-htaccess/36807965