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This article mainly introduces "how to remove a few characters on the right side of php". In daily operation, I believe many people have doubts about how to remove a few characters on the right side of php. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "how to remove a few characters on the right side of php"! Next, please follow the editor to study!

Removal method: 1, use substr_replace () to delete all characters starting from the right n position, syntax "substr_replace ($str,",-n) ", parameter" n "for the number of characters to be removed; 2, with substr (), syntax" substr ($str,0,-n) ".

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Php, remove a few characters on the right.

Method 1: use the substr_replace () function

The substr_replace () function is used to replace part of a string with another string, starting at a specified location.

Substr_replace (string,replacement,start,length)

When the replacement value (the second parameter, replacement) is set to an empty character'', it can be used to delete characters.

To delete a string from the right (tail) of a string, you need to set the startc parameter to a negative value (- n) and the length parameter to n:

It means to delete n characters from the right side of the string.

Of course, the length parameter can also be omitted, so the n-bit starts to delete all characters.

Implementation example:

Method 2: use the substr () function

The substr () function can intercept a certain length of character from a specified position of a string, which can be called a "substring" or "substring".

Substr (string,start,length)

You just need to set the start parameter of the function to 0 and the length parameter to-n to delete the last n characters.

Implementation example:

At this point, the study on "how to remove a few characters from the right side of php" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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