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The knowledge of this article "php string query function how to use" is not quite understood by most people, so the editor summarizes the following contents, detailed contents, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this "php string query function how to use" article.

Php string query function is: 1, stripos () function, you can find the first occurrence of specified characters; 2, strpos () function, you can find the location of the first occurrence of specified characters; 3, strripos () function, you can find the location of the last occurrence of specified characters; 4, strrpos () function.

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

String query function in php

1. Stripos () function

Stripos () is used to find the first occurrence of a portion of a string in a string (case-insensitive).

2. Strpos () function

Strpos () is used to find the first occurrence of a string (case sensitive).

3. Strripos () function

Strripos () is used to calculate the last occurrence of the specified string in the target string (case-insensitive).

4. Strrpos () function

Strrpos () is used to calculate the last occurrence of the specified string in the target string.

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