Today I learned

[NogDog]

TIL: PHP now has a hrtime() function for when microseconds are not enough resolution (among other more technical reasons it may be advantageous in certain situations).

PS: Where "now" means since PHP 7.3. 😁

[Weedpacket]

NogDog (among other more technical reasons it may be advantageous in certain situations).

Like it won't suddenly jump backwards when the underlying machine decides to adjust its clock to align it with an NTP server.

[NogDog]

I think I once knew this already, then re-learned today: you can use the ?? null coalescing operator as a sort of shorthand syntax to avoid "variable does not exist" types of warnings/errors while keeping the code terser than using the ternary operator or some sort of if/else statement:

$foo = $_COOKIE['bar'] ?? null;
// ...instead of...
$foo = isset($_COOKIE['bar']) ? $_COOKIE['bar'] : null;

PS: I believe I'd like to eat something called a "cookie bar" now. 😉

[Weedpacket]

The ?? operator also has an assignment form, ??=, which was initially undocumented. It's handy for setting stuff that might or might not already be set.

$option['colour'] ??= $defaults['colour'];

If $option already has an element colour the line does nothing, but if it doesn't ... well, it does now, with the value given in $defaults['colour'].

[sneakyimp]

Javascript has somewhat arbitrary ideas of which printable ASCII chars are "punctuation" and which are "symbols" when you use regex:

const patterns = {
  'LOWER' : /\p{Ll}/u,
  'UPPER' : /\p{Lu}/u,
  'DIGIT' : /\p{N}/u,
  'PUNCTUATION' : /\p{P}/u,
  'SYMBOL' : /\p{S}/u
}
let results = []
for (let i=32; i<127; i++) {
  let char = String.fromCharCode(i)
  matches = []
  for(let type in patterns) {
    if (char.match(patterns[type])) {
      matches.push(type)
    }
  }
  results.push(char + ' - ' + matches.join(','))
}
console.log(results);

[Weedpacket]

sneakyimp

<?php
const patterns = [
  'LOWER' => '/\p{Ll}/u',
  'UPPER' => '/\p{Lu}/u',
  'DIGIT' => '/\p{N}/u',
  'PUNCTUATION' => '/\p{P}/u',
  'SYMBOL' => '/\p{S}/u'
];
$results = [];
for ($i=32; $i<127; $i++) {
  $char = chr($i);
  $matches = [];
  foreach(patterns as $type => $patt) {
    if (preg_match($patt, $char)) {
      $matches[] = $type;
    }
  }
  $results[] = ($char . ' - ' . join(',', $matches));
}
echo join("\n", $results);

Sure enough,

The distinctions between some General_Category values are somewhat arbitrary for edge cases, particularly those involving symbols and punctuation.
https://www.unicode.org/reports/tr44/#General_Category_Values

[Weedpacket]

TIL the PHP manual comments section doesn't want you to use the word "specialised" when posting.

[Weedpacket]

What's weird is that neither of my two previous posts bumped the thread.

[Weedpacket]

Nor did that one.

[dalecosp]

That in MySQL, you don't store a number as FLOAT if you want to compare exactly (=) or do much math with it. Since this was a price field, glad I learned before going live this month...

(It seems important ... I wonder if I knew that once and forgot?)

[Weedpacket]

dalecosp Not to use floats for money? Pretty important. MySQL does have a DECIMAL type, right?
(And lets see if this post gets counted on the front page. It's been a while...)

[Steve_R_Jones]

Testing.....

[Steve_R_Jones]

test 2

[Steve_R_Jones]

Test #3
No Change to the Forum List... Thread did not move to the top.

[Steve_R_Jones]

TEST #4

[Steve_R_Jones]

Test #5

[Steve_R_Jones]

Test #6

[Steve_R_Jones]

Test # 6

[Steve_R_Jones]

Test #7

[Steve_R_Jones]

Test #8