Use php to verify whether the email format is correct

Verifying whether the email format is correct can be achieved through the filter_var function.

Function introduction:

filter_var() function filters a variable through the specified filter.

Syntax:

filter_var(variable, filter, options)

Parameter introduction:

variable, (required) specifies the variable to be filtered.

filter, (optional) Specifies the ID of the filter to use. The default is FILTER_SANITIZE_STRING.

options, (optional) Specifies an associative array containing flags/options or a single flag/option. Check the possible flags and options for each filter.

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The verification method is as follows:

      
Here we created a check_email method , used to determine whether the email is qualified. Returns true if qualified, false otherwise.
      
The output is as follows:
      
true false
      
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