大约有 40,000 项符合查询结果（耗时：0.0455秒） [XML]
Can I use a hash sign (#) for commenting in PHP?
I have never, ever, seen a PHP file using hashes ( # ) for commenting. But today I realized that I actually can! I'm assuming there's a reason why everybody uses // instead though, so here I am.
...
In pure functional languages, is there an algorithm to get the inverse function?
...
In some cases, yes! There's a beautiful paper called Bidirectionalization for Free! which discusses a few cases -- when your function is sufficiently polymorphic -- where it is possible, completely automatically to derive an inverse function. (It also discusses what makes...
What is output buffering?
What is output buffering and why is one using it in PHP?
7 Answers
7
...
How can prepared statements protect from SQL injection attacks?
...nd even alter it, as every SQL injection example shows it (all examples in PHP/Mysql):
$expected_data = 1;
$query = "SELECT * FROM users where id=$expected_data";
will produce a regular query
SELECT * FROM users where id=1
while this code
$spoiled_data = "1; DROP TABLE users;"
$query ...
Rails hidden field undefined method 'merge' error
... set the value for that attribute on the object that backs the form. For example:
controller:
def new
...
@order.service = "test"
...
end</pre>
view:
<%= form_for @order do |f| %>
<%= f.hidden_field :service %>
<%= f.submit %>
<% end %>
...
Make first letter of a string upper case (with maximum performance)
...hen the ALL CAPS ARGH! is the correct spelling. urbandictionary.com/define.php?term=ARGH&defid=67839
– Carlos Muñoz
May 4 '15 at 17:03
|
...
Can functions be passed as parameters?
...
Yes, consider some of these examples:
package main
import "fmt"
// convert types take an int and return a string value.
type convert func(int) string
// value implements convert, returning x as string.
func value(x int) string {
return fmt.Sprintf...
Difference between $.ajax() and $.get() and $.load()
...s arrays of data to the server (POST request)
$( "#objectID" ).load( "test.php", { "choices[]": [ "Jon", "Susan" ] } );
share
|
improve this answer
|
follow
|...
No line-break after a hyphen
...
Try using the non-breaking hyphen ‑. I've replaced the dash with that character in your jsfiddle, shrunk the frame down as small as it can go, and the line doesn't split there any more.
...
Copy/duplicate database without using mysqldump
...
In PHP:
function cloneDatabase($dbName, $newDbName){
global $admin;
$db_check = @mysql_select_db ( $dbName );
$getTables = $admin->query("SHOW TABLES");
$tables = array();
while($row = mysql_fetch...