How to output the first digits of an array in php

How to output the first few digits of the array in php: first use the array_slice() function to get the first few elements of the array, the syntax is "array_slice(array,0, returns the number of digits in the array element)"; then use print_r( ) function will output the obtained array elements.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php outputs the first few digits of the array Method

<?php
$a=array("red","green","blue","yellow","brown");
print_r(array_slice($a,0,2));
?>

Output:

Array ( [0] => red [1] => green )

Description:

##array_slice() function takes out the array according to conditions A value and returned.

Note: If the array has string keys, the returned array will retain the key names.

Syntax

array_slice(array,start,length,preserve)

ParametersDescriptionRequired. Specifies an array. ##Optional. numerical value. Specifies the length of the returned array. preserve Optional. Specifies whether the function retains key names or resets key names. Possible values: Recommended study: "

array
start	Required. numerical value. Specifies the starting position of the element to be retrieved. 0 = first element. If the value is set to a positive number, it will be taken from front to back. If the value is set to a negative number, the absolute value of start is taken from back to front. -2 means start from the second to last element of the array.
length	If the value is set to an integer, this number of elements is returned. If this value is set to a negative number, the function will terminate fetching this far from the end of the example array. If this value is not set, all elements starting from the position set by the start parameter to the end of the array are returned.
	true - keep the key name false - default. Reset key name

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