How to determine if array elements are not spaces in php

Methods to determine if array elements are not spaces: 1. Use the "foreach ($arr as $value){}" statement to traverse the array; 2. Use the "if($value!=" ")" statement to determine Whether the array elements are spaces; 3. If all array elements are not empty, output "array elements are not spaces".

The operating environment of this tutorial: Windows 7 system, PHP version 7.1, DELL G3 computer

php determines that the array element cannot be a space

Idea:

• Use the foreach statement to traverse the array, and assign the key value of the current array to $value## in each loop

• #In the loop body, use the if statement to determine whether the array element is a space
  • If it is not a space, then

    $i

  • If it is a space, set

    $i=0, and use break; to exit the entire loop.
    

• Use the if statement to determine whether the

  $i value is 0, then you can know whether there is a space element in the array

Implementation code:

<?php
header("Content-type:text/html;charset=utf-8"); 
$arr = array(10,"php中文网",20," ","php教程");
$i=0;
foreach ($arr as $value) { 
    if($value!=" "){
    	$i++;
    }else{
    	$i=0;
		break;
    }
}
if ($i==0) {
	echo("数组中有元素为空格");
} else {
	echo("数组元素都不为空格");
}
?>

Output result:

## Recommended learning: "

PHP video tutorial

》

The above is the detailed content of How to determine if array elements are not spaces in php. For more information, please follow other related articles on the PHP Chinese website!