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How to properly add cross-site request forgery (CSRF) token using PHP
...empty($_SESSION['token'])) {
$_SESSION['token'] = bin2hex(random_bytes(32));
}
$token = $_SESSION['token'];
Sidenote: One of my employer's open source projects is an initiative to backport random_bytes() and random_int() into PHP 5 projects. It's MIT licensed and available on Github and Compos...
Bytes of a string in Java
...");
System.out.println(utf16Bytes.length); // prints "24"
final byte[] utf32Bytes = string.getBytes("UTF-32");
System.out.println(utf32Bytes.length); // prints "44"
final byte[] isoBytes = string.getBytes("ISO-8859-1");
System.out.println(isoBytes.length); // prints "11"
final byte[] winBytes = s...
Position of least significant bit that is set
...ly and lookup»:
unsigned int v; // find the number of trailing zeros in 32-bit v
int r; // result goes here
static const int MultiplyDeBruijnBitPosition[32] =
{
0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
};...
How to change row color in datagridview?
...h (DataGridViewRow row in vendorsDataGridView.Rows)
if (Convert.ToInt32(row.Cells[7].Value) < Convert.ToInt32(row.Cells[10].Value))
{
row.DefaultCellStyle.BackColor = Color.Red;
}
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Compare version numbers without using split function
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JohnDJohnD
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Are C# events synchronous?
...name instance void
add_OnCall(class [mscorlib]System.Func`2<int32,string> 'value') cil managed
{
// ...
.locals init (class [mscorlib]System.Func`2<int32,string> V_0,
class [mscorlib]System.Func`2<int32,string> V_1,
class [mscorlib]System.Func`2&l...
Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
Consider the following example on a 32 bit x86 machine:
11 Answers
11
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What is a method group in C#?
...
32
It is purely a compiler term for "I know what the method name is, but I don't know the signature"; it has no existence at runtime. AFAIK, t...
Add subdomain to localhost URL
...windows as well. The host file on windows is located at: C:\Windows\System32\drivers\etc\hosts. You will need to copy the file to somewhere else that has lower permissions, (like your desktop), to edit it and then paste it back into the folder (to work around the permissions).
...
How to convert decimal to hexadecimal in JavaScript
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If you need to handle things like bit fields or 32-bit colors, then you need to deal with signed numbers. The JavaScript function toString(16) will return a negative hexadecimal number which is usually not what you want. This function does some crazy addition to make it a ...