Mastering the if Statement in PHP: A Complete Guide

The if statement is used to execute a block of code only if the specified condition evaluates to true. This is the simplest PHP's conditional statements and can be written like:

Syntax:

<span class="pln">

</span><span class="kwd">if</span><span class="pln"> </span><span class="pun">(</span><span class="pln">condition</span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
    code to be executed </span><span class="kwd">if</span><span class="pln"> condition </span><span class="kwd">is</span><span class="pln"> </span><span class="kwd">true</span><span class="pun">;</span><span class="pln">
</span><span class="pun">}</span><span class="pln">

</span>

Example:

<span class="pln">

</span><span class="pun">&lt;?</span><span class="pln">php

$n </span><span class="pun">=</span><span class="pln"> </span><span class="lit">12</span><span class="pun">;</span><span class="pln">
</span><span class="kwd">if</span><span class="pun">(</span><span class="pln">$n </span><span class="pun">&gt;</span><span class="pln"> </span><span class="lit">0</span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
 printf</span><span class="pun">(</span><span class="str">"n is positive"</span><span class="pun">);</span><span class="pln">
</span><span class="pun">}</span><span class="pln">

</span><span class="pun">?&gt;</span><span class="pln">

</span>

Output:

If you will rum the above code, you will get the following output.

<span class="pln">

n </span><span class="kwd">is</span><span class="pln"> positive

</span>