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Update The-Basics.md

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Tidying up the wordyness, removing overused and thus redundant variable assignments and improving explanations in replacement for quick & short comments.
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Neil Masters
2014-06-02 23:32:50 +01:00
parent 871ca108d2
commit 3c647ba559
1 changed files with 8 additions and 29 deletions
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pages/The-Basics.md
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@@ -285,11 +285,12 @@ stacked/nested, it is advised to use one per line for readability.
<?php
$a = 5;
echo ($a == 5) ? 'yay' : 'nay';
{% endhighlight %}
vs.
In comparison, here is an example that sacrifices all forms of readability for the sake of reducing the line count.
// nested ternary
$b = 10;
{% highlight php %}
<?php
echo ($a) ? ($a == 5) ? 'yay' : 'nay' : ($b == 10) ? 'excessive' : ':('; // excess nesting, sacrificing readability
{% endhighlight %}
@@ -339,42 +340,20 @@ vs
<?php
$a = 3;
return $a == 3 ? "yay" : "nope"; // return yay or nope if $a == 3
{% endhighlight %}
It is down to the judgement of the developer where and when to use this method to improve code readability as it is debatable what is an improvement and what is a hinderance. Here is an example where it might be wise to use bracketing.
Bracketing also affords us the capability of creating unions within a statement block where the block will be checked as a whole. Such as this example below which will return true if both ($a == 3 and $b == 4) are true and $c == 5 is also true.
{% highlight php %}
<?php
$a = 3;
$b = 4;
$c = 5;
return $a == 3 || $b === 4 || $c !== 5; // return true if $a == 3 or $b === 4(value and type) or $c !== 5(value and type)
vs
<?php
$a = 3;
$b = 4;
$c = 5;
return ($a == 3) && ($b === 4) && ($c !== 5); // return true if $a == 3 or $b === 4(value and type) or $c !== 5(value and type)
return ($a == 3 && $b == 4) && $c == 5;
{% endhighlight %}
Another reason to utilise bracketing is the ability to create unions within a statement block where the block will be checked as a whole. Such as:
Another example is the snippet below which will return true if ($a != 3 AND $b != 4) OR $c == 5.
{% highlight php %}
<?php
$a = 3;
$b = 4;
$c = 5;
return ($a == 3 && $b == 4) && $c == 5; // return true if both ($a == 3 and $b == 4) are true and $c == 5 is true.
return ($a != 3 && $b != 4) || $c == 5; // return true if ($a != 3 AND $b != 4) OR $c == 5
return (($a == $b || $a == $c) && $b != 4) || $c == 5; // return true if (($a == $b or $a == $c) and $b != 4) OR $c == 5
return ($a != 3 && $b != 4) || $c == 5;
{% endhighlight %}
* [Ternary operators](http://php.net/manual/en/language.operators.comparison.php)