1.2.911. PHP 7.1 Microseconds¶
PHP supports microseconds in DateTime class and date_create() function. This was introduced in PHP 7.1.
In previous PHP versions, those dates only used seconds, leading to lazy comparisons : This code displays true in PHP 7.0 and older, (unless the code was run too close from the next second). In PHP 7.1, this is always false.
This is also true with DateTime :
This evolution impacts mostly exact comparisons (== and ===). Non-equality (!= and !==) will probably be always true, and should be reviewed.
<?php
$now = date_create();
usleep(10); // wait for 0.001 ms
var_dump($now == date_create());
?>
See also Backward incompatible changes.
1.2.911.1. Connex PHP features¶
1.2.911.1.1. Suggestions¶
Check direct comparisons of date
1.2.911.1.2. Specs¶
Short name |
Php/Php71microseconds |
Rulesets |
|
Exakat since |
0.8.9 |
PHP Version |
All |
Severity |
Major |
Time To Fix |
Quick (30 mins) |
Changed Behavior |
PHP 7.1 |
Precision |
Very high |
Available in |