Two examples explain how to remove commas and trailing slashes in strings in PHP

As mentioned in the title, this article will introduce you to the method of deleting commas and trailing slashes in strings in PHP through two examples. Friends who are interested, let’s continue reading~

Below we will explain each through specific examples:

The requirement of the first example is to "write a PHP script to remove commas from a specified numeric string."

PHP sample code is as follows:

<?php

$str1 = "2,345.12";
$x = str_replace( &#39;,&#39;, &#39;&#39;, $str1);
if( is_numeric($x))
{
    echo $x."<br>";
}

The running results are as follows:

2543.12

In this example, what everyone needs to know is the str_replace and is_numeric functions:

• str_replace() Function: Replace some characters in a string (case sensitive).

→Note: This function must follow the rules: if the searched string is an array, then it will return an array. If the string being searched is an array, then it will find and replace each element in the array. If an array needs to be searched and replaced at the same time, and the elements to be replaced are less than the number of elements found, the excess elements will be replaced with empty strings. If you search an array and replace only one string, the replacement string will apply to all found values.

• is_numeric() Function: used to detect whether the variable is a number or a numeric string.

→Note: If the specified variable is a number or a numeric string, it returns TRUE, otherwise it returns FALSE. Note that floating point type returns a null value, that is, FALSE

The requirement for the second example is "Write a PHP script to remove trailing slashes from a specified string."

PHP sample code is as follows:

<?php

$my_str = &#39;PHP中文网，你值得拥有！///&#39;;
echo rtrim($my_str, &#39;/&#39;);

The output result is as follows:

PHP中文网，你值得拥有！

In this example, you need to know the rtrim function:

• rtrim()Function: Remove blank characters or other predefined characters on the right side of the string.

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