How to remove square brackets in php

php method to remove brackets: first create a PHP sample file; then remove the brackets through the regular expression "preg_replace('/\[.*?\]/', '', $str);" The content inside the parentheses and square brackets; finally, the running results can be output through echo.

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PHP removes brackets and content inside brackets

$str = '9sfa[ksl64546+j]s45';
$str = preg_replace('/\[.*?\]/', '', $str);
echo $str;exit;

Note: Mainly depends on the regular expression, and can be flexibly changed according to the expression

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