Concatenate a string
How to add content to a string variable ?
If or in_array
How to check the value of a variable ?
Remove spaces from text
How to remove spaces from a string ?
Does a property exists in an object ?
How to check if a property exist in an object :
Does a key exists in an array ?
How to check if a key exists in an array like :
This is null
How to check if my variable is NULL ?
Is my array empty ?
How to check if my array variable is empty ?
Is my string empty ?
How to check if my string variable is empty ?
From multi-dimensional array to key/value array
How to transform an array like :
Formatting phone number
How to transform 0123456789 to 01-23-45-67-89 ?