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How to fix getImageData() error The canvas has been tainted by cross-origin data?
...".
Would it work for you to save a copy of the image to your server using PHP and then just load the new image? For example, you could send the URL to the PHP script and save it to your server, then return the new filename to your javascript like this:
<?php //The name of this file in this exam...
Why is Java's boolean primitive size not defined?
...embers, is it also true, that they are also 4 bytes? The class instance is allocated as a whole on the stack, so I can imagine, JVM should probably use 1 byte per boolean/byte member and finally make an 4-byte alignment for the complete class instance. Is it so? (if you have references that prove th...
How to check for valid email address? [duplicate]
...)
>>> parseaddr('invalid-email')
('', 'invalid-email')
So, as @TokenMacGuy put it, the only definitive way of checking an e-mail address is to send an e-mail to the expected address and wait for the user to act on the information inside the message.
However, you might want to check for,...
Why is require_once so bad to use?
Everything I read about better PHP coding practices keeps saying don't use require_once because of speed.
14 Answers
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How does RewriteBase work in .htaccess
...hs in the rule's target. So say you have this rule:
RewriteRule ^foo$ bar.php [L]
The bar.php is a relative path, as opposed to:
RewriteRule ^foo$ /bar.php [L]
where the /bar.php is an absolute path. The absolute path will always be the "root" (in the directory structure above). That means tha...
What is the purpose of a stack? Why do we need it?
...erts on the semantic analysis of their language, not on efficient register allocation of new chip sets.
Now suppose we do it the CIL way. How many CIL generators do you have to write? One per language. How many JIT compilers do you have to write? One per processor. Total: 20 + 10 = 30 code generato...
PHP json_decode() returns NULL with valid JSON?
... On my server, it doesn't. And I can't call json_last_error() because it's PHP 5.2.9. That function appears on PHP 5.3.0.
– Joel A. Villarreal Bertoldi
Mar 9 '10 at 15:54
1
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When would anyone use a union? Is it a remnant from the C-only days?
...te a heterogeneous collection of unrelated types which are not dynamically allocated (perhaps they are in-place constructed in a map, or members of an array).
And now, an example, with a UML class diagram:
The situation in plain English: an object of class A can have objects of any class among ...
How to use base class's constructors and assignment operator in C++?
...ur class has no resources then use the default version.
// Dynamically allocated memory is a resource.
// If any members have a constructor that throws then you will need to
// write your owen version of these to make it exception safe.
X(X const& copy)
// Do most of the ...
What is compiler, linker, loader?
... Lexical Analyzer:
It combines characters in the source file, to form a "TOKEN". A
token is a set of characters that does not have 'space', 'tab' and 'new line'.
Therefore this unit of compilation is also called "TOKENIZER". It also removes
the comments, generates symbol table and relocation table...