function maleToFemaleRatio($event_id)
{
$cxn = $GLOBALS['cxn'];
$qry = "SELECT (SELECT sex \n FROM user_list \n WHERE user_list.user_id=attendees.user_id)\n as sexes FROM attendees \n WHERE event_id='{$event_id}'";
$res = mysqli_query($cxn, $qry);
$males = 0;
$females = 0;
while ($row = mysqli_fetch_assoc($res)) {
$sex = $row['sexes'];
if ($sex == "M") {
$males++;
}
if ($sex == "F") {
$females++;
}
}
if ($males != 0 and $females != 0) {
return double($males) / double($females);
} else {
if ($males == 0 and $females == 0) {
return "no attendees";
} else {
if ($males == 0) {
return "all female";
} else {
if ($females == 0) {
return "all males";
} else {
return 0;
}
}
}
}
}
function ethiopicmult($plier, $plicand, $tutor)
{
if ($tutor) {
echo "ethiopic multiplication of {$plier} and {$plicand}\n";
}
$r = 0;
while ($plier >= 1) {
if (!iseven($plier)) {
$r += $plicand;
}
if ($tutor) {
echo "{$plier}, {$plicand} ", iseven($plier) ? "struck" : "kept", "\n";
}
$plier = halve($plier);
$plicand = double($plicand);
}
return $r;
}
Немного более сложными примерами выражений являются функции. Например, рассмотрим следующую функцию:
*/
function foo()
{
return 5;
}
function double($i)
{
return $i * 2;
}
$b = $a = 5;
/* присвоить значение пять переменным $a и $b */
$c = $a++;
/* постфиксный инкремент, присвоить значение $a
(5) переменной $c */
$e = $d = ++$b;
/* префиксный инкремент, присвоить увеличенное
значение $b (6) переменным $d и $e */
/* в этой точке и $d, и $e равны 6 */
$f = double($d++);
/* присвоить удвоенное значение $d перед
инкрементом (2*6 = 12) переменной $f */
$g = double(++$e);
/* присвоить удвоенное значение $e после
инкремента (2*7 = 14) переменной $g */
$h = $g += 10;
/* сначала переменная $g увеличивается на 10,
приобретая, в итоге, значение 24. Затем значение
присвоения (24) присваивается переменной $h,
которая в итоге также становится равной 24. */
<?php
$titrePage = "fonctions";
include "header.php";
//echo get_include_path();
require_once "fonctions.php";
//require parce que bloquant si non trouvé
echo double(5) . "<br/>";
echo triple(5) . "<br/>";
echo $multiplicateur;
echo double(triple(46)) . "<br/>";
// date du jour en format US
$dateJour = date('Y-m-d');
// conversion en date FR
echo date_fr($dateJour) . "<br/>";
echo date_fr('2015-10-05') . "<br/>";
echo date_us('05/10/2015') . "<br/>";
$tableau = array(array('Language' => 'PHP', 'Age' => 20, 'Createur' => 'Rasmus Lerdorf'), array('Language' => 'JAVA', 'Age' => 33, 'Createur' => 'SUN'), array('Language' => 'C#', 'Age' => 14, 'Createur' => 'Microsoft'), array('Language' => 'COBOL', 'Age' => 56, 'Createur' => 'IBM'), array('Language' => 'BASIC', 'Age' => 51, 'Createur' => 'inconnu'), array('Language' => 'C', 'Age' => 45, 'Createur' => 'inconnu'), array('Language' => 'C++', 'Age' => 17, 'Createur' => 'toto'));
echo afficheTableau2D($tableau);
$tNombres = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
echo '<pre>';
// affichage des nombres pairs
print_r(array_filter($tNombres, 'pair'));
// détail de la fonction array_filter
$tResultat = array();
foreach ($tNombres as $cle => $nombre) {
if (pair($nombre)) {
$tResultat[$cle] = $nombre;
}
}
print_r($tResultat);
<?php
include "Header.php";
include "Double.php";
echo double(19) . "<br/>";
echo half(60) . "<br/>";
echo datefr("2015-10-05") . "<br/>";
echo dateus("05/10/2015") . "<br/>";
$tnombres = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
print_r(array_filter($tnombres, "pair"));
print_r(array_filter($tnombres, "impair"));
include "Footer.php";
<h1>Fonctions</h1>
<?php
get_include_path();
include "header.php";
include "fonction.php";
echo double(5) . "</br>";
echo triple(3) . "</br>";
echo double(triple(3)) . "</br>";
echo puissance(45, 1) . "</br>";
// date du jour en format US
$dateJour = date('Y-m-d');
// conversion en date FR
echo date_fr($dateJour) . "</br>";
// reconversion au format US
echo date_us(date_fr($dateJour)) . "</br>";
include "footer.php";
<?php
function double()
{
global $number;
static $count;
$number *= 2;
$count++;
echo $count . "回試行<br/>";
}
$number = 3;
for ($i = 0; $i < 20; $i++) {
double();
}
//関数を20回呼び出す処理を追加
echo $number;
//課題7
<?php
function double($i)
{
return $i * 2;
}
$b = $a = 5;
$c = $a++;
$e = $d = ++$b;
$f = double($d++);
$h = $g += 10;
echo "{$a}";
// echo "<br/>\$a";
<?php
function double(int $value)
{
return 2 * $value;
}
$a = double("5");
var_dump($a);
<table border = '1'>
<tr>
<th>EDIT</th>
<th>ID</th>
<th>Title</th>
<th>URL</th>
<th>State</th>
</tr>
<?php
foreach ($apples as $k => $apple) {
?>
<tr class = '<?php
double($k);
?>
'>
<td>
<a href = "index.php?controller=Guava&action=update&id=<?php
echo $apple['id'];
?>
">
Edit
</a>
</td>
<td>
<?php
echo $apple['id'];
?>
</td>
<?php
include "header.php";
//echo get_include_path();
include "fonctionj4bis.php";
echo double(5) . '<br>';
echo triple(10) . '<br>';
echo double(triple(46)) . '<br>';
$dateJour = date('Y-m-d');
echo date_fr($dateJour) . "<br>";
echo date_us('05/10/2015') . "<br>";
$tableau = array(array('language' => 'PHP', 'age' => 21, 'createur' => 'Rasmus Ledorf'), array('language' => 'JAVA', 'age' => 33, 'createur' => 'SUN'), array('language' => 'C#', 'age' => 14, 'createur' => 'Microsoft'), array('language' => 'COBOL', 'age' => 56, 'createur' => 'IBM'), array('language' => 'BASIC', 'age' => 51, 'createur' => 'inconnu'), array('language' => 'C', 'age' => 45, 'createur' => 'inconnu'), array('language' => 'C++', 'age' => 32, 'createur' => 'toto'));
echo afficheTableau($tableau) . "<br>";
$tnombres = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
echo '<pre>';
//affichage des nombres pairs
print_r(array_filter($tnombres, 'pair'));
$tresultat = array();
foreach ($tnombres as $nombre) {
if (pair($nombre)) {
$tresultat[] = $nombre;
}
}
// affichage des nombres impairs
print_r(array_filter($tnombres, 'impair'));
// tri des éléments dont le créateur est inconnu
print_r(array_filter($tableau, 'inconnu'));
// calculs sur le tableau
print_r(array_map('cube', $tnombres));
// ajout d'une zone divers dans le tableau
print_r(array_map('divers', $tableau));