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| $t=array();
$d=-M_PI;
$fin=M_PI;
$pas=M_PI/4;
$formule="sin(x)";
calcul ($t,$d,$fin,$pas,$formule);
function calcul (&$t,$d,$fin,$pas,$formule) {
echo "\$d = $d";
echo "<br>\n";
echo "\$fin = $fin";
echo "<br>\n";
echo "\$pas = $pas";
echo "<br>\n";
$pattern="/[\\\$x]/";
echo "\$pattern = ---$pattern---";
echo "<br>\n";
$f=preg_replace('x',$pattern,$formule);
echo "\$f = '$f'";
echo "<br>\n";
if ($f===null) echo '$f===null<br>';
echo "<br>\n";
$pattern="#\\\$x#";
echo "\$pattern = ---$pattern---";
echo "<br>\n";
$f=preg_replace('x',$pattern,$formule);
echo "\$f = '$f'";
echo "<br>\n";
if ($f===null) echo '$f===null<br>';
$f='sin($x)';
for ($i=0,$x=$d;$x<= $fin;$x+=$pas) {
eval("\$t[\$i++] = $f;");
echo "$x : ".$t[$i-1]."<br>";
}
echo "<br>\n";
//affiche_grand_tableau($t);
//return $t;
} |