What are the string functions in php?
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What is a composer in PHP?
How to get ip address of a server in php?
When is a conditional statement ended with an endif?
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What are the uses of explode() and implode() functions?
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List some string function name in php?
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Suppose we receive a form submitted by a post to subscribe to a newsletter. This form has only one field, an input text field named email. How would we validate whether the field is empty? Print a message "the email cannot be empty" in this case?