How to remove the last few digits of a string in php

In PHP, you can use the substr function to remove the last few digits of a string. The implementation code statement is such as "echo substr("Hello world",0,5)".

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

How to remove the last few digits of a string in php ?

In PHP, you can use the substr function to remove the last few digits of a string.

The substr() function returns a part of a string.

Note: If the start parameter is a negative number and length is less than or equal to start, length is 0.

Example:

Use start and length parameters with different positive and negative numbers:

<?php
echo substr("Hello world",0,10)."<br>";
echo substr("Hello world",1,8)."<br>";
echo substr("Hello world",0,5)."<br>";
echo substr("Hello world",6,6)."<br>";
echo substr("Hello world",0,-1)."<br>";
echo substr("Hello world",-10,-2)."<br>";
echo substr("Hello world",0,-6)."<br>";
echo substr("Hello world",-2-3)."<br>";
?>

Running results:

Hello worl
ello wor
Hello
world
Hello worl
ello wor
Hello
world

Recommended learning: "PHP video tutorial》

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