How to remove double quotes from a string in php using regular expressions

In PHP, you can use the "preg_replace" function and the "/(\")/" regular expression to remove double quotes from a string. This function is used to perform a regular expression search and replacement. The syntax is "preg_replace('/(\")/', '', string)".

The operating environment of this tutorial: Windows 10 system, PHP version 7.1, DELL G3 computer

How to use regex to remove double quotes from a string in php

preg_replace function performs a regular expression search and replace.

Syntax

mixed preg_replace ( mixed $pattern , mixed $replacement , mixed $subject [, int $limit = -1 [, int &$count ]] )

Search for the part of subject that matches pattern and replace it with replacement.

Parameter description:

• $pattern: The pattern to be searched can be a string or a string array.

• $replacement: String or string array used for replacement.

• $subject: The target string or string array to be searched and replaced.

• $limit: Optional, the maximum number of substitutions for each subject string for each pattern. The default is -1 (no limit).

• #$count: Optional, the number of times the replacement is performed.

Return value

If subject is an array, preg_replace() returns an array, otherwise it returns a string.

If a match is found, the replaced subject is returned, otherwise the unchanged subject is returned. If an error occurs, NULL is returned.

First we need to write a regular pattern that matches double quotes. You must understand that double quotes are a special character. According to the regular rules, special characters need to be escaped, so we get the regular pattern $reg='/(\") /';

The example is as follows:

<?php
$str = &#39;abc"def"ghi&#39;;
$str = preg_replace(&#39;/(\")/&#39;, &#39;&#39;, $str);
echo $str;
?>

Output result:

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