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How to convert a std::string to const char* or char*?
...t chance that your string implementation will need to do some extra memory allocation and/or data copying in order to prepare the NUL terminated buffer
As a further hint, if a function's parameters require the (const) char* but don't insist on getting x.size(), the function probably needs an ASCII...
PHP - concatenate or directly insert variables in string
I am wondering, What is the proper way for inserting PHP variables into a string?
This way:
14 Answers
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How to benchmark efficiency of PHP script
I want to know what is the best way to benchmark my PHP scripts. Does not matter if a cron job, or webpage or web service.
...
Getting HTTP code in PHP using curl
...lso helps with following redirects):
How can I check if a URL exists via PHP?
As a whole:
$url = 'http://www.example.com';
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, true); // we want headers
curl_setopt($ch, CURLOPT_NOBODY, true); // we don't need body
curl_setopt($ch, CUR...
Downloading a large file using curl
...
<?php
set_time_limit(0);
//This is the file where we save the information
$fp = fopen (dirname(__FILE__) . '/localfile.tmp', 'w+');
//Here is the file we are downloading, replace spaces with %20
$ch = curl_init(str_replace("...
(HTML) Download a PDF file instead of opening them in browser when clicked
...
you will need to use a PHP script (or an other server side language for this)
<?php
// We'll be outputting a PDF
header('Content-type: application/pdf');
// It will be called downloaded.pdf
header('Content-Disposition: attachment; filename="do...
Only variables should be passed by reference
...file_name) cannot be turned into a reference. This is a restriction in the PHP language, that probably exists for simplicity reasons.
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Safely remove migration In Laravel
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I accidentally created a migration with a bad name (command: php artisan migrate:make). I did not run (php artisan migrate) the migration, so I decided to remove it.
My steps:
Manually delete the migration file under app/database/migrations/my_migration_file_name.php
Reset the compos...
What is the difference between public, private, and protected?
...e property / method will be public.
More: (For comprehensive information)
PHP Manual - Visibility
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What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be
...not safely pass-by-value
use of Eigen types as members requires special allocator customization (or you crash)
use with stl container types and possibly other templates required
special allocation customization (or you will crash)
certain compilers need special care to prevent crashes on fu...