The validate_date
function we’ve created as an alternative to checkdate
appears to be a custom solution for date validation in php. It checks if a given date (in the format ‘yyyy/mm/dd’ or ‘yyyy-mm-dd’) is valid by ensuring that the day and month are within the appropriate ranges for the specified year.
Date Validation in PHP analysis and Usage
Here’s a brief analysis of the code for Date Validation in PHP and how you can use it:
<?php
function validate_date($date){
$dateparameters = array();
$date = preg_replace("/[^0-9\']/", ",", $date);
$date = explode(',', $date);
$validation = '';
if(count($date) == 3){
for ($i = 0; $i < 3; ++$i) {
$dateparameters []= $date[$i];
}
$year = $dateparameters[0];
$month = $dateparameters[1];
$actualmonth = $dateparameters[1];
$actualday = $dateparameters[2];
$day = cal_days_in_month(CAL_GREGORIAN, $month, $year);
$day = range(1, $day); // day range
$month = range(1, 12); // month range
if(in_array($actualday, $day) && in_array($actualmonth, $month)){ // Check if actual month and day are in the range of days that should be in the provided month of the given year
$validation = 'valid';
}
}
return $validation;
}
?>
To use this function, you can follow the examples you provided:
<?php
$ourdate = "2022/7/34"; // Our provided date
if(validate_date($ourdate) == 'valid'){
echo $ourdate.' is a valid date';
}else{
echo $ourdate.' is an invalid date';
}
?>
This code will output: “2022/7/34 is an invalid date” because the day ’34’ is outside the valid range for any month.
<?php
$ourdate = "1994-02-14"; // Our provided date
if(validate_date($ourdate) == 'valid'){
echo $ourdate.' is a valid date';
}else{
echo $ourdate.' is an invalid date';
}
?>
This code will output: “1994-02-14 is a valid date” because the date ‘1994-02-14’ falls within the valid range for February in 1994.
Your custom date validation function appears to be working as intended. It’s a useful alternative to checkdate
if you have specific requirements for date validation in your application.