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php method to determine how many dimensions an array is: first create a PHP sample file; then define a foreachArray method; then use the "is_array" function to detect whether the variable is an array; finally determine whether the array is an array through loop traversal Just a few dimensions.
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PHP Determines the Dimension of an Array
/** * 判断数组为几维数组 可优化 * @param array $array * @param int $count * @return int */ function foreachArray($array = [], $count = 1){ if (!is_array($array)){ return $count; } foreach ($array as $value){ $count++; if (!is_array($value)){ return $count; } return foreachArray($value, $count); } }
Related introduction:
is_array() function is used to detect whether a variable is an array.
Syntax
bool is_array ( mixed $var )
Parameter description:
$var: Variable to be detected.
Return value
If the detected variable is an array, TRUE is returned, otherwise FALSE is returned.
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