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Today, the editor will share with you how php converts single quotation marks into double quotation marks. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article. Let's take a look at it.

Methods: 1, using the str_replace () function, the syntax "str_replace (", "string)"; 2, using the preg_replace () function with the regular expression "/\" / ", the syntax" preg_replace ('/\'/', "string)".

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

The method of converting single quotation marks to double quotation marks by php

Method 1: using the str_replace () function

The str_replace () function replaces some characters in the string (case sensitive).

You just need to use this function to find single quotes in the string and replace them with double quotes.

Note: quotation marks of the same type cannot be nested (single quotation marks cannot be included in single quotation marks and double quotation marks cannot be included in double quotation marks). They can be in the format of "outer double inner single" or "outer single inner double".

Example:

Method 2: use the preg_replace () function with regular expressions to convert single quotation marks into double quotation marks

The preg_replace function performs the search and replacement of a regular expression.

Example:

These are all the contents of the article "how php converts single quotes to double quotes". Thank you for reading! I believe you will gain a lot after reading this article. The editor will update different knowledge for you every day. If you want to learn more knowledge, please pay attention to the industry information channel.

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