Limit text display in PHP

Question

I want to limit the size of characters that appear, but I’m not getting it. I use the:

<? echo $row["catname"] ?>

It takes a text from phpMyAdmin and shows, only I want to limit the display of characters on the page, as I do?

Answer 1

For cases where an indicator is required that the string has been truncated, there is another option (which is almost unknown), which would be the function mb_strimwidth.

It seems she was already made for that purpose:

mb_strimwidth("Hello World", 0, 10, "...");

Upshot

"Hello W..."

In this case, you should note that you have to add the limiter number added to the number of characters that will be the limitation indication.

For example:

 mb_strimwidth("Oi mundo", 0, 5, "...")

Displays:

"Hi..."

Answer 2

You can use the replace(), this function has 3 parameters.

substr(string, start, end);

To string is the input you have, the beginning is the initial position and the end is the final position.

In the case of the second or third parameter: if negative, it counts positions from the end. If positive, it counts from the beginning.

Examples:

echo substr("abcdef", 0, 2); // ab
echo substr("abcdef", 0, 4); // abcd
echo substr("abcdef", 0, -2); // abcd

Answer 3

The most universal solution is this:

mb_substr ( string $str , int $start , [ int $length [, string $encoding ]] )

The function substr is limited to encodings single byte, and will have problems with strings with special characters in encodings like 'UTF-8' (for ISO it works well). Already the mb_substr account by characters, and not bytes, being more suitable for portable code.

Use with ISO-8859-1:

echo mb_substr( 'Acentuação faz diferença', 4, 10, 'ISO-8859-1' );

Use with UTF-8:

echo mb_substr( 'Acentuação faz diferença', 4, 10, 'UTF-8' );

Important: the last parameter can normally be omitted, for cases where the application is globally configured to use a specific encoding (which is desirable).

More details in the manual:

http://php.net/manual/en/function.mb-substr.php

Related:

How to show only "x" characters in a div?

I cannot limit text with Japanese characters

Answer 4

Do so:

<?php
echo substr($row["catname"], 0, 20);//Apenas os primeiros 20 caracteres