<?php
$r='';
$M1='';
$M2='';
if (isset($_POST['Submit'])){ $M1=trim($_POST['m1']);
$M2=trim($_POST['m2']);
$m1=explode("\n",$M1); $m2=explode("\n",$M2); for ($i=0; $i<count($m1);$i++)
$a[$i]=explode(',',$m1[$i]); for ($i=0; $i<count($m2);$i++)
$b[$i]=explode(',',$m2[$i]); $op=$_POST['operation'];
$mat=new matrix;
switch ($op){ case 'Divide':
$b=$_POST['m2'];
$rr=$mat->divide($a,$b);
break;
case 'Multiply':
$rr=$mat->multiply($a,$b);
break;
case 'Add':
$rr=$mat->add($a,$b);
break;
case 'Subtract':
$rr=$mat->subtract($a,$b);
break;
}
for ($i=0;$i<count($rr);$i++){ for($j=0;$j<count($rr[$i]);$j++)
$r.=$rr[$i][$j].',';
$r=substr($r,0,strlen($r)-1)."\n";
}
}
class matrix{ public function multiply($m1,$m2){ $r=count($m1);
$c=count($m2[0]);
$p=count($m2);
if(count($m1[0])!=$p)die('Matrices incompatibles'); for ($i=0;$i< $r;$i++){ for($j=0;$j<$c;$j++){ $m3[$i][$j]=0;
for($k=0;$k<$p;$k++){ $m3[$i][$j]+=$m1[$i][$k]*$m2[$k][$j];
}
}
}
return($m3);
}
public function add($m1,$m2){ if (count($m1)!=count($m2) || count($m1[0])!=count($m2[0])) die('Matrices incompatibles'); for ($i=0;$i<count($m1);$i++){ for($j=0;$j<count($m1[0]);$j++){ $m3[$i][$j]=$m1[$i][$j]+$m2[$i][$j];
}
}
return($m3);
}
public function subtract($m1,$m2){ if (count($m1)!=count($m2) || count($m1[0])!=count($m2[0])) die('Matrices incompatibles'); for ($i=0;$i<count($m1);$i++){ for($j=0;$j<count($m1[0]);$j++){ $m3[$i][$j]=$m1[$i][$j]-$m2[$i][$j];
}
}
return($m3);
}
public function divide($m1,$m2){ //$m2 must be num
if (is_array($m2)) die ('Pleae enter e number for deviding not an array'); for ($i=0;$i<count($m1);$i++){ for($j=0;$j<count($m1[0]);$j++){ $m3[$i][$j]=$m1[$i][$j]/$m2;
}
}
return($m3);
}
}
?>
<style>
* {font-family:'Times New Roman', Times, serif;}form>div {text-align: center;}form select {width: 140px; font-size: 14pt;}form textarea {height: 174px; width: 237px; font-size: 14pt;}form input[type=submit] {width: 95px; height: 48px; margin-top: 0px; font-size: 20pt;}table {border: 1px solid #000000;width: 543px; margin:auto;}
table .matriz {padding: 5px;font-size:17pt;text-align: center; width: 269px; color: #2214B9;border-style: solid;border-width: 1px;}
table .matriz~td {padding: 5px;font-size:17pt;text-align: center; color: #2214B9;border-style: solid;border-width: 1px; width: 270px;}
table .opciones {padding: 5px; font-size: 20pt; text-align: center; color: #2214B9;border-style: solid;border-width: 1px; background-color: #D7E5FF;}
</style>
<form method="post">
<div>
<table>
<tr>
<td class="matriz" style="background-color: #FFFFD7;">
<strong>Matrix 1</strong></td>
<td style="background-color: #FFFFD7;">
<strong>
Matrix 2</strong></td>
</tr>
<tr>
<td class="matriz" style="background-color: #D8FFD7;">
<textarea name="m1"><?php echo $M1?></textarea>
</td>
<td style="background-color: #D8FFD7;">
<textarea cols="20" name="m2" rows="1"><?php echo $M2?></textarea>
</td>
</tr>
<tr>
<td class="opciones" colspan="2">
<select name="operation">
<option selected="">Multiply</option>
<option>Divide</option>
<option>Add</option>
<option>Subtract</option>
</select>
<br><br>
<input name="Submit" type="submit" value="Do">
</td>
</tr>
</table>
<br>
<?php
if (isset($_POST['Submit'])) { ?>
<span style=" font-size: 20pt; color: #1A7D16">
Result of <?php echo $op?>ing:
</span>
<br>
<textarea cols="20" name="TextArea3" rows="1" style="background-color: #FFD7F6;"><?php print_r($r)?></textarea>
<?php
}
?>
</div>
</form>
Crear cuenta
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