Website At 100: Empty

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Okay let say that we have the following array</div>
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<a href="http://websiteat100.com/blog/category/php/" style="-webkit-transition: background-color 0.2s ease 0s, border 0.2s ease 0s, color 0.2s ease 0s, opacity 0.2s ease-in-out 0s; color: black; line-height: inherit; text-decoration: none; transition: background-color 0.2s ease 0s, border 0.2s ease 0s, color 0.2s ease 0s, opacity 0.2s ease-in-out 0s;" title="Php blog by websiteat100.com">PHP</a></div>
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<tr><td data-settings="show" style="border: none; color: #333333; font-size: 12px; line-height: 18px; padding: 9px 10px; vertical-align: top;"><div data-line="crayon-52a811fc416b3122312941-1">
1</div>
</td><td style="border: none; color: #333333; font-size: 12px; line-height: 18px; padding: 9px 10px; vertical-align: top;"><div id="crayon-52a811fc416b3122312941-1">
$arr = Array ( [0] => ‘php’ [1] => ‘tutorial’ [2] => ‘programming’ [3] => );</div>
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In our array above we have an empty element which is [3], so how to get rid of it? will that’s not a problem I will explain it here.</div>
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After searching and digging on the net I found 4 to 10 lines of code but I believed that there should be a simple possible solution for this, then I tried searching over php.net site and I found this very useful <a href="http://websiteat100.com/blog/category/php/" style="-webkit-transition: background-color 0.2s ease 0s, border 0.2s ease 0s, color 0.2s ease 0s, opacity 0.2s ease-in-out 0s; color: black; line-height: inherit; text-decoration: none; transition: background-color 0.2s ease 0s, border 0.2s ease 0s, color 0.2s ease 0s, opacity 0.2s ease-in-out 0s;" title="Php blog by websiteat100.com">php </a>array function <em style="line-height: inherit;">array_filter()</em>.</div>
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To remove NULL values</h3>
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<a href="http://websiteat100.com/blog/category/php/" style="-webkit-transition: background-color 0.2s ease 0s, border 0.2s ease 0s, color 0.2s ease 0s, opacity 0.2s ease-in-out 0s; color: black; line-height: inherit; text-decoration: none; transition: background-color 0.2s ease 0s, border 0.2s ease 0s, color 0.2s ease 0s, opacity 0.2s ease-in-out 0s;" title="Php blog by websiteat100.com">PHP</a></div>
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<table style="border-collapse: collapse; border-spacing: 0px;"><tbody>
<tr><td data-settings="show" style="border: none; color: #333333; font-size: 12px; line-height: 18px; padding: 9px 10px; vertical-align: top;"><div data-line="crayon-52a811fc416bd031664837-1">
1</div>
</td><td style="border: none; color: #333333; font-size: 12px; line-height: 18px; padding: 9px 10px; vertical-align: top;"><div id="crayon-52a811fc416bd031664837-1">
$arr = array_filter($arr, ‘strlen’);</div>
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To remove all false values</h3>
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<a href="http://websiteat100.com/blog/category/php/" style="-webkit-transition: background-color 0.2s ease 0s, border 0.2s ease 0s, color 0.2s ease 0s, opacity 0.2s ease-in-out 0s; color: black; line-height: inherit; text-decoration: none; transition: background-color 0.2s ease 0s, border 0.2s ease 0s, color 0.2s ease 0s, opacity 0.2s ease-in-out 0s;" title="Php blog by websiteat100.com">PHP</a></div>
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<table style="border-collapse: collapse; border-spacing: 0px;"><tbody>
<tr><td data-settings="show" style="border: none; color: #333333; font-size: 12px; line-height: 18px; padding: 9px 10px; vertical-align: top;"><div data-line="crayon-52a811fc416c2767825857-1">
1</div>
</td><td style="border: none; color: #333333; font-size: 12px; line-height: 18px; padding: 9px 10px; vertical-align: top;"><div id="crayon-52a811fc416c2767825857-1">
$arr = array_filter($arr);</div>
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That’s it and it works like a charm;)</div>
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HOW TO REMOVE EMPTY ELEMENT OR NULL VALUES FROM PHP ARRAY?

Okay let say that we have the following array PHP 1 $arr = Array ( [0] => ‘php’ [1] => ‘tutorial’ [2] => ‘programming’...