Are there any specific limitations or restrictions to consider when using in_array() in PHP?

When using in_array() in PHP, it's important to note that the function performs a loose comparison by default, which can lead to unexpected results. To ensure strict type checking, you can set the third parameter of in_array() to true. This will compare both the values and types of the elements in the array. 

// Using strict comparison with in_array()
$fruits = ['apple', 'banana', 'cherry'];
if (in_array('1', $fruits, true)) {
    echo 'Found';
} else {
    echo 'Not found';
}

Keywords

in_array limitations restrictions PHP array

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