Print limited character with read more button in PHP

6 years ago
Zaid Bin Khalid
20,537 Views
11

You can limit string to N number with PHP built-in function. In this tutorial, I am going to show you how you can limit string with (Read More) Button with PHP. The function is substr() which is return a part of a string.

substr ( string $string , int $start [, int $length ] ) : string

This function has 3 parameters.

The String is the input string.
If Start is non-negative, the returned string will start at the first position in a string, counting from zero. And if that Start is negative then the first position will start from the end of the string.
the last parameter is a length, And the length is also positive or negative.

For example, If the starter is positive in the string ‘asdfghjkl‘, the character at position 0 is ‘a‘, the character at position 2 is ‘c‘, and so on. And if it is negative, then the first character ‘l‘ will return and so on.

<?php
     $rest = substr("asdfghjkl", -1);    // returns "l"
     $rest = substr("asdfghjkl", -2);    // returns "lk"
     $rest = substr("asdfghjkl", -3, 1); // returns "j"
?>

The simple way to limit string up to 20 or N number is given below.

<?php
    $string = 'Lorem Ipsum is simply dummy text.';
    $string = substr($string,0,11).'...';
?>

You can print a string on the condition base for that you need to use another function strlen(). This function return length of the given string.

strlen ( string $string ) : int

<?php
$string    =    'Note: We convert a string into an array with explode function. I do not use explode function then the output will be a string as shown in below example.';
$string = (strlen($string) > 50)?substr($string,0,25).'... <a href="https://learncodeweb.com/php/print-limited-character-with-read-more-button-in-php/">Read More</a>' : $string;
echo $string;
?>

The output will be.

Note: We convert a string… Read More