How to traverse an array in php and remove space elements

Implementation steps: 1. Use the foreach statement to loop through the array, with the syntax "foreach ($array as $key => $value){loop statement block;}"; 2. In the loop body, use " The ==" operator determines whether the array element "$value" is a space. If so, use the unset() function to delete the space element based on the key name "$key". The syntax is "if($value==" "){unset( $array[$key]);}".

The operating environment of this tutorial: windows7 system, PHP version 8.1, DELL G3 computer

In PHP, you can use the foreach statement to traverse Remove space elements from an array.

Implementation steps:

Step 1: Use the foreach statement to loop through the array

foreach ($array as $key => $value){
    循环语句块;
}

Traverse the given $array array , in each loop, the value of the current array will be assigned to $value, and the key name will be assigned to $key.

Step 2: In the loop body, determine whether the array element $value is a space, and use the unset() function to delete the space element based on the key name

• Use the "==" operator to determine whether the array element $value is a space

• If so, use the unset() function to delete the space element based on the key name

if($value==" "){
unset( $array[$key] );
}

Implementation sample code:

<?php
$array = [11," ",33," ",44," ",66];
var_dump($array);
foreach ($array as $key => $value){
	if($value==" "){
		unset($array[$key]);
	}
}
var_dump($array);
?>

Recommended learning: "PHP Video Tutorial"

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