How to remove backslashes in php

In the previous article, we learned about the method of comparing two strings. If necessary, please read "How to know the similarities and differences of strings using PHP functions". This time we will introduce to you how to delete backslashes. You can refer to it if you need it.

In the previous article, we learned how to use functions to insert backslashes in strings. I wonder if you still remember? If you don’t remember, we can review it.

In PHP, you can use the addcslashes() function and addslashes() function to insert characters at specified positions in the string. I won’t go into details about the similarities and differences between these two functions in this article. If you need it, you can read another article "Teach you how to use string functions to insert backslashes before characters ”, this article details how to insert a backslash before a character.

Back to our topic today, let’s learn how to delete the backslash before the character.

First we learn how to remove the backslashes added by the addcslashes() function.

Let’s look at a small example.

<?php 
$str = addcslashes("Hello World!","W");
echo($str); 
echo PHP_EOL;
echo stripcslashes($str);
?>

The result of this example is

We can clearly observe that the backslash added using addcslashes was deleted by the stripcslashes function.

Let’s take a look at this function in detail.

stripcslashes() function removes backslashes added by addslashes() function.

Let’s look at the syntax of the Kangkang function.

stripcslashes(要检查的字符串)

stripcslashes() function We have finished learning the function, let’s look at another function, the stripslashes() function.

Let’s look at a small example first.

<?php 
$str = addslashes(&#39;What does "yolo" mean?&#39;);
echo($str);
echo PHP_EOL;
echo stripslashes($str);
?>

Look at the results of this example.

We know that the addslashesn function is a string that adds a backslash before a predefined character. When we look at the result, we find that the original s double The backslash before the quote is gone, indicating that the stripslashes function is working.

Let’s take a look at this function in detail.

The stripslashes() function removes the backslashes added by the addslashes() function.

The syntax of this function is

stripslashes(要检查的字符串)

What we need to pay attention to is: this function can be used to clean data retrieved from the database or from an HTML form.

The editor has always had a question, I wonder if you have any, that is, can you use the stripslashes() function to delete the backslashes added by the addslashes() function?

Let’s take a look.

<?php 
$str = addslashes(&#39;What does "yolo"?&#39;);
echo($str);
echo PHP_EOL;
echo stripcslashes($str);
?>

The result is

It seems feasible, but I’m not sure if there are any other problems, so it’s better not to try it.

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