How to limit string length in a multidimensional array?

Question

I have a 2-dimensional PHP array containing strings ($fulltable) which I'm trying to fit into the datables grid (https://www.datatables.net/).

Sometimes some of the strings are really long. I'd like to truncate each string to lets say to 75 charachters, which will make the fields more manageable on display.

Is there an easy PHP function to do this or should I just create a double loop like this?

foreach ($fulltable as $row) {
    foreach ($row as $field) {
        // TRUNCATE FIELD HERE
    }  
}

Rizier123 · Accepted Answer · 2015-06-03 20:47:04Z

3

You could use array_walk_recursive() to do this and take the value by reference, e.g.

array_walk_recursive($arr, function(&$v){
    $v = substr($v, 0, 75);
});

answered Jun 3, 2015 at 20:47

Rizier123

59.8k17 gold badges106 silver badges167 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

taxicala · Accepted Answer · 2015-06-03 20:47:27Z

1

Use mb_substr:

mb_substr($field, 0, 30);

Where 0 is the beginning and 30 is the end, 30 could be anything you want, the length of your output.

answered Jun 3, 2015 at 20:47

taxicala

21.8k7 gold badges41 silver badges67 bronze badges

Comments

Sven · Accepted Answer · 2015-06-03 20:48:06Z

1

array_map() or array_walk() will apply a function to the contents of an array (single dimension), and be probably faster that looping with foreach.

There is also array_walk_recursive() for multi dimensional arrays.

answered Jun 3, 2015 at 20:48

Sven

71.2k10 gold badges113 silver badges113 bronze badges

Collectives™ on Stack Overflow

How to limit string length in a multidimensional array?

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related