Remove array duplicates PHP [duplicate]

Question

How do I remove duplicates from an array?

Let's say that my I have two arrays named $array and $new_array. $array has contents while $new_array is empty, as seen below:

$array = array(5,1,2,1,5,7,10);
$new_array = array();

I want $new_array to store the unique values of $array. It kind of goes like this:

$array = array(5,1,2,1,5,7,10);
$new_array = array(5,1,2,7,10); // removing the 1 and 5 after 2 since those numbers are already a duplicate of the preceding numbers.
echo $new_array; // Output: 512710

This question appears to be off-topic because a cursory Google search would give you the answer a thousand-fold. — salathe
– salathe, Commented Oct 6, 2013 at 9:34

Pupil · Accepted Answer · 2014-09-09 03:30:24Z

3

You can do it through PHP's array_unique function.

This function traverses through your provided array and returns an array with unique values (repeating values will be removed).

Code to return desired string:

$array = array(5,1,2,1,5,7,10);
$new_array = array_unique($array);
echo implode('', $new_array);

edited Sep 9, 2014 at 3:30

answered Oct 6, 2013 at 9:30

Pupil

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Comments

Amal · Accepted Answer · 2013-10-06 09:30:00Z

3

Use array_unique() and implode():

$array = array(5,1,2,1,5,7,10);
$new_array = array_unique($array);
echo implode('', $new_array);

Output:

answered Oct 6, 2013 at 9:30

Amal

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1 Comment

coding.bird Over a year ago

OMG thanks! So does that mean that $new_array now stores the unique values of $array?

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