Some common functions of string processing in PHP

This article shows you some common functions of string processing in PHP, which are concise and easy to understand, which can definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

In the development of PHP, string handling is one of our most commonly used operations. Mastering some commonly used string handling functions of PHP will make you improve both technically and efficiently in PHP development.

Here are some common functions for PHP string handling

String output

Echo (): output one or more strings print (): output a string printf (): output formatted strings

String removal

Trim (): remove special symbols such as white space at the beginning and end of a string or specify character sequence ltrim (): remove special symbols such as white space at the beginning of a string or specify character sequence rtrim (): remove special symbols such as white space at the end of a string or specify character sequence chop (): same as rtrim ()

String concatenation

Implode (): use characters to combine the contents of an array into a string join (): same as implode ()

String segmentation

Explode (): splits one string into another, dividing the string into an array

String acquisition

Substr (): get part of the string strstr (): find the position of the first occurrence of the string in another string, and return all characters subchr (): same as strstr () strrchr (): find the position of the last occurrence of the string in another string, and return all characters from that position to the end of the string

String substitution

Substr_replace (): replace part of a string with another string str_replace (): replace some characters in a string with one string

String calculation

Strlen (): get the length of the string strpos (): locate the first occurrence of the string strrpos (): locate the last occurrence of the string

String XHTML formatted display

Nl2br (): convert newline character n to XHTML newline character htmlspecialchars (): convert some special characters to HTML entities htmlspecialchars_decode (): convert some HTML entities to special characters, the inverse function of htmlspecialchars ()

String storage (escape)

Addslashes (): adds escape characters to special characters. Stripslashes (): the inverse of addslashes (). The above are some of the common functions of string processing in PHP. Have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.