<?php
header('Access-Control-Allow-Origin: *');
date_default_timezone_set('Asia/Tokyo');
$birth_date = (string)$_POST["birth_date"];
$max_age = (int)$_POST["point_age"];

/**
 * @param string $birth_date
 * @return string|false
 */
function check1($birth_date = ""): bool
{
    $flg = false;
    $str_date = explode("/", $birth_date);
    if (count($str_date) === 3) {
        $flg = true;
        if (!((int)$str_date[0] >= 1000)) {
            $flg = false;
        }
        if(((int)$str_date[0] > (int)date("Y"))){
            $flg = false;
        }
        if (!((int)$str_date[1] >= 1 && (int)$str_date[1] <= 12)) {
            $flg = false;
        }
        if ($flg) {
            if ((int)$str_date[1] === 2) {
                if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 28)) {
                    $flg = false;
                }
                if ((int)$str_date[0] % 4 === 0) {
                    $flg = true;
                    if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 29)) {
                        $flg = false;
                    }
                    if ((int)$str_date[0] % 100 === 0) {
                        $flg = true;
                        if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 28)) {
                            $flg = false;
                        }
                        if ((int)$str_date[0] % 400 === 0) {
                            $flg = true;
                            if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 29)) {
                                $flg = false;
                            }
                        }
                    }
                }
            } else {
                $last_day = [4, 6, 9, 11];
                if (array_search((int)$str_date[1], $last_day, false)!== false) {
                    if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 30)) {
                        $flg = false;
                    }
                } else {
                    if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 31)) {
                        $flg = false;
                    }
                }
            }
        }
    }
    return $flg;
}

/**
 * @param int $age
 * @return string|false
 */
function check2($age = 0): bool
{
    $flg = true;
    if ($age < 0) {
        $flg = false;
    }
    return $flg;
}


/**
 * @param string $birth_date
 * @param string $maxage
 * @return string $reslut
 */
function sumup($birth_date, $maxage)
{
    $reslut = [];
    $birth_date_array = explode("/", $birth_date);
    $birth_date = sprintf("%04d%02d%02d", $birth_date_array[0], $birth_date_array[1], $birth_date_array[2]);
    $today = date('Ymd');
    $age = floor(($today - $birth_date) / 10000);
    $day1 = new DateTime("{$birth_date_array[0]}-{$birth_date_array[1]}-{$birth_date_array[2]}");
    $day2 = new DateTime();    
    $interval1 = $day1->diff($day2, true);
    $baseday =  (int)($interval1->format('%a'));
    if ((int)$maxage <= (int)$age) {
        $pointday = 0;
    } else {
        $maxage--;
        $day3 = new DateTime((date('Y') + ($maxage - $age)) . "-{$birth_date_array[1]}-{$birth_date_array[2]}");
        $interval2 = $day2->diff($day3, true);
        $pointday = (int)($interval2->format('%a'))+1;
    }


    $reslut = [
        [
            "result" => "success",
            "age"=>$age ."歳",
            "baseday" => $baseday . "日(生きてきた日数)",
            "pointday" => $pointday . "日(" .($maxage +1). "歳まであと)"
        ]
    ];
    return json_encode($reslut);
}

if (!check1($birth_date)) {
    print json_encode([
        [
            "result" => "error",
            "error" => "string is invalid1"
        ]
    ]);
} elseif (!check2($max_age)) {
    print json_encode([
        [
            "result" => "error",
            "error" => "string is invalid2"
        ]
    ]);
} else {
    print sumup($birth_date, $max_age);
}

interpreter = tf.lite.Interpreter(model_path=args.model_file)

  interpreter = tf.lite.Interpreter(
      model_path=args.model_file, num_threads=args.num_threads)

wp-includes\general-template.php 

function get_calendar( $initial = true, $echo = true ) {
	global $wpdb, $m, $monthnum, $year, $wp_locale, $posts;

	$key   = md5( $m . $monthnum . $year );
	$cache = wp_cache_get( 'get_calendar', 'calendar' );

	if ( $cache && is_array( $cache ) && isset( $cache[ $key ] ) ) {
		/** This filter is documented in wp-includes/general-template.php */
		$output = apply_filters( 'get_calendar', $cache[ $key ] );

		if ( $echo ) {
			echo $output;
			return;
		}

		return $output;
	}

	if ( ! is_array( $cache ) ) {
		$cache = array();
	}

	// Quick check. If we have no posts at all, abort!
	if ( ! $posts ) {
		$gotsome = $wpdb->get_var( "SELECT 1 as test FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 1" );
		if ( ! $gotsome ) {
			$cache[ $key ] = '';
			wp_cache_set( 'get_calendar', $cache, 'calendar' );
			return;
		}
	}

	if ( isset( $_GET['w'] ) ) {
		$w = (int) $_GET['w'];
	}
	// week_begins = 0 stands for Sunday.
	$week_begins = (int) get_option( 'start_of_week' );

	// Let's figure out when we are.
	if ( ! empty( $monthnum ) && ! empty( $year ) ) {
		$thismonth = zeroise( intval( $monthnum ), 2 );
		$thisyear  = (int) $year;
	} elseif ( ! empty( $w ) ) {
		// We need to get the month from MySQL.
		$thisyear = (int) substr( $m, 0, 4 );
		// It seems MySQL's weeks disagree with PHP's.
		$d         = ( ( $w - 1 ) * 7 ) + 6;
		$thismonth = $wpdb->get_var( "SELECT DATE_FORMAT((DATE_ADD('{$thisyear}0101', INTERVAL $d DAY) ), '%m')" );
	} elseif ( ! empty( $m ) ) {
		$thisyear = (int) substr( $m, 0, 4 );
		if ( strlen( $m ) < 6 ) {
			$thismonth = '01';
		} else {
			$thismonth = zeroise( (int) substr( $m, 4, 2 ), 2 );
		}
	} else {
		$thisyear  = current_time( 'Y' );
		$thismonth = current_time( 'm' );
	}

	$unixmonth = mktime( 0, 0, 0, $thismonth, 1, $thisyear );
	$last_day  = gmdate( 't', $unixmonth );
	$oooothisyear  = date( 'Y', $unixmonth  );
	$oooolast_day  = date( 't', $unixmonth );
	$oooothismonth = date( 'm' , $unixmonth);

	// Get the next and previous month and year with at least one post.
	$previous = $wpdb->get_row(
		"SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
		FROM $wpdb->posts
		WHERE post_date < '$thisyear-$thismonth-01'
		AND post_type = 'post' AND post_status = 'publish'
			ORDER BY post_date DESC
			LIMIT 1"
	);
	$next     = $wpdb->get_row(
		"SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
		FROM $wpdb->posts
		WHERE post_date > '$oooothisyear-$oooothismonth-{$oooolast_day} 23:59:59'
		AND post_type = 'post' AND post_status = 'publish'
			ORDER BY post_date ASC
			LIMIT 1"
	);

	/* translators: Calendar caption: 1: Month name, 2: 4-digit year. */
	$calendar_caption = _x( '%1$s %2$s', 'calendar caption' );
	$calendar_output  = '<table id="wp-calendar" class="wp-calendar-table">
	<caption>' . sprintf(
		$calendar_caption,
		$wp_locale->get_month( $thismonth ),
		gmdate( 'Y', $unixmonth )
	) . '</caption>
	<thead>
	<tr>';

	$myweek = array();

	for ( $wdcount = 0; $wdcount <= 6; $wdcount++ ) {
		$myweek[] = $wp_locale->get_weekday( ( $wdcount + $week_begins ) % 7 );
	}

	foreach ( $myweek as $wd ) {
		$day_name         = $initial ? $wp_locale->get_weekday_initial( $wd ) : $wp_locale->get_weekday_abbrev( $wd );
		$wd               = esc_attr( $wd );
		$calendar_output .= "\n\t\t<th scope=\"col\" title=\"$wd\">$day_name</th>";
	}

	$calendar_output .= '
	</tr>
	</thead>
	<tbody>
	<tr>';

	$daywithpost = array();

	// Get days with posts.
	$dayswithposts = $wpdb->get_results(
		"SELECT DISTINCT DAYOFMONTH(post_date)
		FROM $wpdb->posts WHERE post_date >= '{$thisyear}-{$thismonth}-01 00:00:00'
		AND post_type = 'post' AND post_status = 'publish'
		AND post_date <= '{$oooothisyear}-{$oooothismonth}-{$oooolast_day} 23:59:59'",
		ARRAY_N
	);

	if ( $dayswithposts ) {
		foreach ( (array) $dayswithposts as $daywith ) {
			$daywithpost[] = (int) $daywith[0];
		}
	}

	// See how much we should pad in the beginning.
	$pad = calendar_week_mod( gmdate( 'w', $unixmonth ) - $week_begins );
	if ( 0 != $pad ) {
		$calendar_output .= "\n\t\t" . '<td colspan="' . esc_attr( $pad ) . '" class="pad">?</td>';
	}

	$newrow      = false;
	$daysinmonth = (int) gmdate( 't', $unixmonth );
	$oooodaysinmonth = (int) date( 't', $unixmonth );

	for ( $day = 1; $day <= $oooodaysinmonth; ++$day ) {
		if ( isset( $newrow ) && $newrow ) {
			$calendar_output .= "\n\t</tr>\n\t<tr>\n\t\t";
		}
		$newrow = false;

		if ( current_time( 'j' ) == $day &&
			current_time( 'm' ) == $thismonth &&
			current_time( 'Y' ) == $thisyear ) {
			$calendar_output .= '<td id="today">';
		} else {
			$calendar_output .= '<td>';
		}

		if ( in_array( $day, $daywithpost, true ) ) {
			// Any posts today?
			$date_format = gmdate( _x( 'F j, Y', 'daily archives date format' ), strtotime( "{$thisyear}-{$thismonth}-{$day}" ) );
			/* translators: Post calendar label. %s: Date. */
			$label            = sprintf( __( 'Posts published on %s' ), $date_format );
			$calendar_output .= sprintf(
				'<a href="%s" aria-label="%s">%s</a>',
				get_day_link( $thisyear, $thismonth, $day ),
				esc_attr( $label ),
				$day
			);
		} else {
			$calendar_output .= $day;
		}

		$calendar_output .= '</td>';

		if ( 6 == calendar_week_mod( gmdate( 'w', mktime( 0, 0, 0, $thismonth, $day, $thisyear ) ) - $week_begins ) ) {
			$newrow = true;
		}
	}

	$pad = 7 - calendar_week_mod( gmdate( 'w', mktime( 0, 0, 0, $thismonth, $day, $thisyear ) ) - $week_begins );
	if ( 0 != $pad && 7 != $pad ) {
		$calendar_output .= "\n\t\t" . '<td class="pad" colspan="' . esc_attr( $pad ) . '">?</td>';
	}

	$calendar_output .= "\n\t</tr>\n\t</tbody>";

	$calendar_output .= "\n\t</table>";

	$calendar_output .= '<nav aria-label="' . __( 'Previous and next months' ) . '" class="wp-calendar-nav">';

	if ( $previous ) {
		$calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-prev"><a href="' . get_month_link( $previous->year, $previous->month ) . '">? ' .
			$wp_locale->get_month_abbrev( $wp_locale->get_month( $previous->month ) ) .
		'</a></span>';
	} else {
		$calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-prev">?</span>';
	}

	$calendar_output .= "\n\t\t" . '<span class="pad">?</span>';

	if ( $next ) {
		$calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-next"><a href="' . get_month_link( $next->year, $next->month ) . '">' .
			$wp_locale->get_month_abbrev( $wp_locale->get_month( $next->month ) ) .
		' ?</a></span>';
	} else {
		$calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-next">?</span>';
	}

	$calendar_output .= '
	</nav>';

	$cache[ $key ] = $calendar_output;
	wp_cache_set( 'get_calendar', $cache, 'calendar' );

	if ( $echo ) {
		/**
		 * Filters the HTML calendar output.
		 *
		 * @since 3.0.0
		 *
		 * @param string $calendar_output HTML output of the calendar.
		 */
		echo apply_filters( 'get_calendar', $calendar_output );
		return;
	}
	/** This filter is documented in wp-includes/general-template.php */
	return apply_filters( 'get_calendar', $calendar_output );
}