How to remove certain substrings from a string in php

In PHP, you can use the str_replace() function to remove multiple specified substrings in a string. You only need to set the first parameter of the function to an array containing multiple values. The second Just set each parameter to a null character; the syntax "str_replace(array,'',$str)" will replace multiple substrings with null characters.

The operating environment of this tutorial: Windows7 system, PHP7.1 version, DELL G3 computer

In PHP, you can use the str_replace() function to remove multiple specified substrings from a string.

str_replace(find,replace,string,count)

Parameters	Description
find	Required . Specifies the value to look for.
replace	Required. Specifies a value that replaces the value in find.
string	Required. Specifies the string to be searched for.
count	Optional. A variable counting the number of substitutions.

Generally, the str_replace() function only searches for one value and replaces it with the specified value.

But you only need to set the first parameter of the function find to an array containing multiple search values, and set the second parameter to a null character to remove multiple characters in the string. specified substring.

<?php
$str = "a-bc-he-lloa-bc-";
echo $str."<br>";
$arr=[&#39;a-&#39;,&#39;c-&#39;,&#39;e-&#39;];
$newStr=str_replace($arr,&#39;A&#39;,$str);
echo $newStr."<br>";
?>

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