What are some best practices for replacing multiple occurrences of a substring within a string in PHP?

When needing to replace multiple occurrences of a substring within a string in PHP, a common approach is to use the `str_replace()` function. This function allows you to specify the substring to search for, the replacement string, and the original string. By using this function with the appropriate parameters, you can easily replace all instances of the substring within the string. 

// Original string
$string = "The quick brown fox jumps over the lazy dog. The quick brown fox is very quick.";

// Substring to replace
$substring = "quick";

// Replacement string
$replacement = "slow";

// Replace all occurrences of the substring within the string
$newString = str_replace($substring, $replacement, $string);

echo $newString;

Keywords

PHP string substring str_replace regular expressions

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