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Insert string at specified position in PHP
  • Last Updated : 18 Oct, 2018

Given a sentence, a string and the position, the task is to insert the given string at the specified position. We will start counting the position form zero. See the examples below.

Input : sentence = ‘I am happy today.’
string = ‘very’
position = 4
Output :I amvery happy today.
Begin counting with 0. Start counting from the very first character till we reach
the given position in the given sentence.
Spaces will also be counted and then insert the given string at the specified position.

Input : sentence = ‘I am happy today.’
string = ‘ very’
position = 4
Output : I am very happy today.

The idea is to use substr_replace()




<?php
$sentence = 'I am happy today.';
$string = 'very ';
$position = '5';
  
echo substr_replace( $sentence, $string, $position, 0 );
?>
Output:
I am very happy today.
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