回显数组中的每个变量

Question

I'm trying to remove whitespaces and replace this with a '-' from every variale in an array. However I only get the last variable of the array.

My code:

<ul class="gap-items">
<?php 
    while ($query->have_posts()): 
        $query->the_post(); 
        $post_type = get_post_type( get_the_ID() );   

        $key = 'field_5208f1f811702';
        $value = get_field($key);

        var_dump($value);

        foreach ($value as $label) {
            $label = strtolower($label);

            $label = preg_replace("/[^a-z0-9_\s-]/", "", $label);

            //Clean up multiple dashes or whitespaces
            $label = preg_replace("/[\s-]+/", " ", $label);

            //Convert whitespaces and underscore to dash
            $label = preg_replace("/[\s_]/", "-", $label);

            var_dump($label);
        }
?>
        <!-- Loop posts -->     
        <li class="item <?php echo $post_type ?> <?php echo $label ?>" id="<?php the_ID(); ?>" data-permalink="<?php the_permalink(); ?>">

So $value is an array. For every variable I'm removing the whitespace and replace it by a dash. I need to echo every variable outside the foreach function. I also tried to implode the variable first but with no results. How to do this? Thanks!

Edit: The first var_dump($value); gives me an array like: array(2) { [0]=> string(8) "Option 3" [1]=> string(8) "Option 4" }

the var_dump($label) gives: string(8) "option-3" string(8) "option-4"

I want to echo just this: option-3 option-4

Answer 1

You are only getting the last one because your echo line:

<li class="item <?php echo $post_type ?> <?php echo $label ?>"></li>

Is placed after your foreach loop. So it's using the last values set for $label and $post_type . Try placing that inside your loop so the echo is generated every time you loop over the list.

You should end up with something like the following:

$value = get_field($key);

foreach ($value as $label) {
    $label = strtolower($label);

    $label = preg_replace("/[^a-z0-9_\s-]/", "", $label);

    //Clean up multiple dashes or whitespaces
    $label = preg_replace("/[\s-]+/", " ", $label);

    //Convert whitespaces and underscore to dash
    $label = preg_replace("/[\s_]/", "-", $label);


    echo "<li class=\"item $post_type $label\"></li>";
}

Answer 2

You closed the foreach loop too early:

$value = get_field($key);

foreach ($value as $label) {
$label = strtolower($label);

$label = preg_replace("/[^a-z0-9_\s-]/", "", $label);

//Clean up multiple dashes or whitespaces
$label = preg_replace("/[\s-]+/", " ", $label);

//Convert whitespaces and underscore to dash
$label = preg_replace("/[\s_]/", "-", $label);


echo "<li class='item $post_type $label'></li>"
}

Answer 3

Use the str_replace function, it takes a string and replaces all occurrences.

str_replace(' ','-',$label)

http://php.net/manual/en/function.str-replace.php

Answer 4

You could use print_r() . That will print the entire array with the keys and values.

So after the foreach , you would write:

print_r($value);

http://php.net/manual/en/function.print-r.php