大约有 44,000 项符合查询结果（耗时：0.0450秒） [XML]
Format number to 2 decimal places
...://www.w3resource.com/mysql/mathematical-functions/mysql-truncate-function.php
With rounding:
ROUND(0.166, 2)
-- will be evaluated to 0.17
ROUND(0.164, 2)
-- will be evaluated to 0.16
docs: http://www.w3resource.com/mysql/mathematical-functions/mysql-round-function.php
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How long is the SHA256 hash?
...h = hash('sha256', 'hello, world!');
var_dump($hash);
Will give you :
$ php temp.php
string(64) "68e656b251e67e8358bef8483ab0d51c6619f3e7a1a9f0e75838d41ff368f728"
i.e. a string with 64 characters.
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How to pass html string to webview on android
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do you add this to the <head> on the index.php/index.html?
– Mthe beseti
Mar 11 '14 at 10:32
1
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How to detect if JavaScript is disabled?
...kie flag, etc..
</script>
<noscript>
<a href="next_page.php?nojs=1">Next Page</a>
</noscript>
Users without js will get the next_page link - you can add parameters here so that you know on the next page whether they've come via a JS/non-JS link, or attempt to set ...
Count with IF condition in MySQL query
...automatically convert NULL to '' when fetching the value. For example with PHP's mysqli interface it would be safe to run your query without COALESCE().
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Looping through the content of a file in Bash
...set inside the loop are lost when it exits (see bash-hackers.org/wiki/doku.php/mirroring/bashfaq/024). This can be very annoying (depending on what you're trying to do in the loop).
– Gordon Davisson
Oct 6 '09 at 0:57
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What is the “realm” in basic authentication
I'm setting up basic authentication on a php site and found this page on the php manual showing the set up. What does "realm" mean here in the header?
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How to alias a table in Laravel Eloquent queries (or using Query Builder)?
... ->get();
Let's see it in action with an awesome tinker tool
$ php artisan tinker
[1] > Schema::create('really_long_table_name', function($table) {$table->increments('id');});
// NULL
[2] > DB::table('really_long_table_name')->insert(['id' => null]);
// true
[3] > DB::t...
Best Practice: Access form elements by HTML id or name attribute?
...'t this precisely what IS passed to the server? When you are working with PHP, it's the name attribute that is your index in the $_POST global.
– seth
Mar 12 '10 at 20:56
2
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Stop Excel from automatically converting certain text values to dates
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In my MySQL query (for CSV output through PHP), I used CONCAT('\t', column_name). Also did the trick. Thanks!
– Just Plain High
Jun 24 '16 at 14:39
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