How to replace string in php

In PHP, the string replacement function is one of the frequently used functions. Using these functions, you can easily complete a variety of string operations. Commonly used string replacement functions mainly include the following:

1. str_replace(): Used to replace specified characters in a string. It supports multiple replacement modes:

str_replace(查找的字符串, 替换成的字符串, 原字符串);

For example:

$str = "Hello, World!";
echo str_replace("Hello", "Goodbye", $str); // 输出：Goodbye, World!

2. preg_replace(): used for regular expression matching and string matching replace.

preg_replace(正则表达式, 替换成的字符串, 原字符串);

For example:

$str = "The quick brown fox jumps over the lazy dog.";
echo preg_replace('/brown/', 'red', $str); // 输出：The quick red fox jumps over the lazy dog.

3. strtr(): Used to replace the specified characters in the string with another set of characters. This function supports multiple replacement rules.

strtr(原字符串, 替换规则);

For example:

$str = "Hello, World!";
$replace_arr = array("Hello" => "Goodbye", "World" => "Universe");
echo strtr($str, $replace_arr); // 输出：Goodbye, Universe!

The above are the commonly used string replacement functions in PHP. You can choose which function to use to complete string operations according to business needs.

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