Is the PHP method available?

2 years ago
Olivia Parker
1 minute

You can use the function function_exists() to check if a PHP method exists. It will return true if the method exists, otherwise it will return false.

For example, the following code snippet demonstrates how to use function_exists() to check if a method named myFunction exists:

if (function_exists('myFunction')) {
    echo "myFunction 存在";
} else {
    echo "myFunction 不存在";
}

In the above code, if myFunction exists, output “myFunction exists”; otherwise, output “myFunction does not exist”.

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