PHP array_search function

The array_search function searches the array for a value that corresponds to the given value. If the given value is found in the array, it will return its key

array_search(mixed $needle, array $haystack, bool $strict = false): int|string|false

Parameters

• $needle: the value that will be searched. If this value is a string, the comparison will be case-sensitive.
• $haystack: the array where we will look for the value given in $needle.
• $strict: this parameter indicates whether the search will be identical or equal. If it is true, the comparison will be === instead of ==. Objects should be of the same instance if strict is true.

Returns

Returns the corresponding key for the searched value in the array; otherwise, it will return false. This will return the key where the searched value first appears.

Ejemplo de PHP array_search

In this example, we have used an associative array, but we must consider other cases because the returned value can also be 0, and this is something to be aware of since the value 0 can be evaluated as false

// Definir un array de autos
$autos = array(
    "Toyota" => "Camry",
    "Honda" => "Civic",
    "Ford" => "Focus",
    "Chevrolet" => "Malibu"
);

// Buscar la posición del modelo "Civic" en el array
$posicion = array_search("Civic", $autos);

// Verificar si se encontró y mostrar el resultado
if ($posicion !== false) {
    echo "La posición del modelo 'Civic' en el array de autos es: " . $posicion;
} else {
    echo "El modelo 'Civic' no se encontró en el array de autos";
}

La posición del modelo 'Civic' en el array de autos es: Honda