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Delete the Variable declarations section

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With the new memory management model the Variable declarations part is not relevant anymore. so it's better to be removed.
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colshrapnel
2021-03-01 12:09:49 +03:00
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parent 51987ade02
commit 21ca28d92a
1 changed files with 0 additions and 18 deletions
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pages/The-Basics.md
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@@ -414,21 +414,3 @@ Since PHP 5.3, it is possible to leave out the middle part of the ternary operat
Expression "expr1 ?: expr3" returns expr1 if expr1 evaluates to TRUE, and expr3 otherwise. Expression "expr1 ?: expr3" returns expr1 if expr1 evaluates to TRUE, and expr3 otherwise.
* [Ternary operators](http://php.net/language.operators.comparison) * [Ternary operators](http://php.net/language.operators.comparison)
## Variable declarations
At times, coders attempt to make their code "cleaner" by declaring predefined variables with a different name. What
this does in reality is to double the memory consumption of said script. For the example below, let us say an example
string of text contains 1MB worth of data, by copying the variable you've increased the scripts execution to 2MB.
{% highlight php %}
<?php
$about = 'A very long string of text'; // uses 2MB memory
echo $about;
// vs
echo 'A very long string of text'; // uses 1MB memory
{% endhighlight %}
* [Performance tips](http://web.archive.org/web/20140625191431/https://developers.google.com/speed/articles/optimizing-php)