When should PHP developers use strtolower() function in their code?

PHP developers should use the strtolower() function when they need to convert a string to all lowercase characters. This can be useful for standardizing input or for case-insensitive comparisons. The strtolower() function is a simple and efficient way to achieve this in PHP code. 

$string = "Hello World";
$lowercaseString = strtolower($string);
echo $lowercaseString;

Keywords

php strtolower() string manipulation text processing character conversion

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