Twig for loop for arrays with keys

Question

I use Twig and I have an array with keys like this:

array[1] = \"alpha\"
array[2] = \"bravo\"
array[3] = \"charlie\"
array[8] = \"delta\"
array[9] = \"echo\"         


        

Answer 1

These are extended operations (e.g., sort, reverse) for one dimensional and two dimensional arrays in Twig framework:

1D Array

Without Key Sort and Reverse

{% for key, value in array_one_dimension %}
    
{{ key }}
    
{{ value }}
{% endfor %}

---

Key Sort

{% for key, value in array_one_dimension|keys|sort %}
    
{{ key }}
    
{{ value }}
{% endfor %}

---

Key Sort and Reverse

{% for key, value in array_one_dimension|keys|sort|reverse %}
    
{{ key }}
    
{{ value }}
{% endfor %}

---

2D Arrays

Without Key Sort and Reverse

{% for key_a, value_a in array_two_dimension %}
    {% for key_b, value_b in array_two_dimension[key_a] %}
        
{{ key_b }}
        
{{ value_b }}
    {% endfor %}
{% endfor %}

---

Key Sort on Outer Array

{% for key_a, value_a in array_two_dimension|keys|sort %}
    {% for key_b, value_b in array_two_dimension[key_a] %}
        
{{ key_b }}
        
{{ value_b }}
    {% endfor %}
{% endfor %}

---

Key Sort on Both Outer and Inner Arrays

{% for key_a, value_a in array_two_dimension|keys|sort %}
    {% for key_b, value_b in array_two_dimension[key_a]|keys|sort %}
        
{{ key_b }}
        
{{ value_b }}
    {% endfor %}
{% endfor %}

---

Key Sort on Outer Array & Key Sort and Reverse on Inner Array

{% for key_a, value_a in array_two_dimension|keys|sort %}
    {% for key_b, value_b in array_two_dimension[key_a]|keys|sort|reverse %}
        
{{ key_b }}
        
{{ value_b }}
    {% endfor %}
{% endfor %}

---

Key Sort and Reverse on Outer Array & Key Sort on Inner Array

{% for key_a, value_a in array_two_dimension|keys|sort|reverse %}
    {% for key_b, value_b in array_two_dimension[key_a]|keys|sort %}
        
{{ key_b }}
        
{{ value_b }}
    {% endfor %}
{% endfor %}

---

Key Sort and Reverse on Both Outer and Inner Array

{% for key_a, value_a in array_two_dimension|keys|sort|reverse %}
    {% for key_b, value_b in array_two_dimension[key_a]|keys|sort|reverse %}
        
{{ key_b }}
        
{{ value_b }}
    {% endfor %}
{% endfor %}