大约有 5,600 项符合查询结果（耗时：0.0153秒） [XML]
How to import an excel file in to a MySQL database
...s. Here is a recent example I used to import a csv file named test.csv.
phpMyAdmin: Select your database first, then select the Import tab. phpMyAdmin will automatically create your table and size your VARCHAR fields, but it won't optimize the field types. phpMyAdmin has trouble importing large...
Bash continuation lines
... two arguments to echo and you only want one, then let's look at string concatenation. In bash, placing two strings next to each other concatenate:
$ echo "continuation""lines"
continuationlines
So a continuation line without an indent is one way to break up a string:
$ echo "continuation"\
>...
Are PDO prepared statements sufficient to prevent SQL injection?
...of MySQL (late 5.1, all 5.5, 5.6, etc) AND PDO's DSN charset parameter (in PHP ≥ 5.3.6)
OR
Don't use a vulnerable character set for connection encoding (you only use utf8 / latin1 / ascii / etc)
OR
Enable NO_BACKSLASH_ESCAPES SQL mode
You're 100% safe.
Otherwise, you're vulnerable even ...
git: diff between file in local repo and origin
...ike this (you are in the local folder):
#!/bin/bash
git fetch
var_local=`cat .git/refs/heads/master`
var_remote=`git log origin/master -1 | head -n1 | cut -d" " -f2`
if [ "$var_remote" = "$var_local" ]; then
echo "Strings are equal." #1
else
echo "Strings are not equal." #0 if you want
fi...
What is bootstrapping?
...
An example of bootstrapping is in some web frameworks. You call index.php (the bootstrapper), and then it loads the frameworks helpers, models, configuration, and then loads the controller and passes off control to it.
As you can see, it's a simple file that starts a large process.
...
Can an html element have multiple ids?
... through space separated or any character separation. Though in the specification it says that for backward compatibility it must not contain space character in attributes values Fragment Identifiers(w3.org/TR/xhtml1/#guidelines) So if you want to express multivalued IDs you have to express it diffe...
What is the most elegant way to remove a path from the $PATH variable in Bash?
...
My dirty hack:
echo ${PATH} > t1
vi t1
export PATH=$(cat t1)
share
|
improve this answer
|
follow
|
...
How do I determine k when using k-means clustering?
...t Bischof, Ales Leonardis, and Alexander Selb in Pattern Analysis and Applications vol. 2, p. 59-72, 1999.
Finally, you can start with one cluster, then keep splitting clusters until the points assigned to each cluster have a Gaussian distribution. In "Learning the k in k-means" (NIPS 2003), Greg ...
Image resizing client-side with JavaScript before upload to the server
...
method: 'POST',
url: 'https://www.marvinj.org/backoffice/imageUpload.php',
data: form,
enctype: 'multipart/form-data',
contentType: false,
processData: false,
success: function (resp) {
$("#divServerResponse").html("SERVER RESPONSE (NEW IMAGE):<br/><im...
Best way to use multiple SSH private keys on one client
...uct ssh to try multiple keys in succession when connecting. Here's how:
$ cat ~/.ssh/config
IdentityFile ~/.ssh/id_rsa
IdentityFile ~/.ssh/id_rsa_old
IdentityFile ~/.ssh/id_ed25519
# ... and so on
$ ssh server.example.com -v
....
debug1: Next authentication method: publickey
debug1: Trying private...