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Several ways to write anonymous functions in PHP that people don’t know
Common writing methods:
1. Traditional writing method
<pre class="brush:php;toolbar:false">
function timer () {
echo "hello world";
}
SwooleTimer::tick(2000, 'timer');
2. Closure writing method
<pre class="brush:php;toolbar:false">
SwooleTimer::tick(2000, function () {
echo "hello world";
});
Advanced writing method:
1. Traditional writing method
<pre class="brush:php;toolbar:false">
$str = "hello world";
function timer () {
global $str;
echo $str;
}
SwooleTimer::tick(2000, 'timer');
2. Closure writing method
<pre class="brush:php;toolbar:false">
$str = "hello world";
SwooleTimer::tick(2000, function () use ($str) {
echo $str;
});
Thank you all for reading, I hope you will benefit a lot.
This article is reproduced from: https://www.cnblogs.com/newmiracle/p/11875325.html
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