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Veiga en 01:30 12 ene 2013
2013-01-12T01:30:08Z
<p></p>
<p><b>Página nueva</b></p><div>[[Category:Estructura da Linguaxe|02 - Aritmética]]<br />
<br />
Os operadores de PHP son moi parecidos aos de C e JavaScript, se vostede coñece estas linguaxes resultaranlle familiares e fáciles de recoñecer.<br />
<br />
Estes son os operadores que se poden aplicar ás variables e constantes numéricas.<br />
<br />
<TABLE WIDTH=583 BORDER=1 CELLPADDING=5 CELLSPACING=3><br />
<TR><br />
<TD WIDTH=61><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt"><B>Operador</B></FONT></FONT></P></TD><br />
<TD WIDTH=80><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt"><B>Nome</B></FONT></FONT></P></TD><br />
<TD WIDTH=53><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt"><B>Exemplo</B></FONT></FONT></P></TD><br />
<TD WIDTH=331><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt"><B>Descrici&oacute;n</B></FONT></FONT></P></TD><br />
</TR><br />
<TR><br />
<TD WIDTH=61><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">+</FONT></FONT></P></TD><br />
<TD WIDTH=80><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Suma</FONT></FONT></P></TD><br />
<TD WIDTH=53><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">5<br />
+ 6</FONT></FONT></P></TD><br />
<TD WIDTH=331><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Suma<br />
dous n&uacute;meros</FONT></FONT></P></TD><br />
</TR><br />
<TR><br />
<TD WIDTH=61><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">-</FONT></FONT></P></TD><br />
<TD WIDTH=80><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Resta</FONT></FONT></P></TD><br />
<TD WIDTH=53><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">7<br />
- 9</FONT></FONT></P></TD><br />
<TD WIDTH=331><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Resta<br />
dous n&uacute;meros</FONT></FONT></P></TD><br />
</TR><br />
<TR><br />
<TD WIDTH=61><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">*</FONT></FONT></P></TD><br />
<TD WIDTH=80><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Multiplicaci&oacute;n</FONT></FONT></P></TD><br />
<TD WIDTH=53><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">6<br />
* 3</FONT></FONT></P></TD><br />
<TD WIDTH=331><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Multiplica<br />
dous n&uacute;meros</FONT></FONT></P></TD><br />
</TR><br />
<TR><br />
<TD WIDTH=61><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">/</FONT></FONT></P></TD><br />
<TD WIDTH=80><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Divisi&oacute;n</FONT></FONT></P></TD><br />
<TD WIDTH=53><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">4<br />
/ 8</FONT></FONT></P></TD><br />
<TD WIDTH=331><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Divide<br />
dous n&uacute;meros</FONT></FONT></P></TD><br />
</TR><br />
<TR><br />
<TD WIDTH=61><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">%</FONT></FONT></P></TD><br />
<TD WIDTH=80><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">M&oacute;dulo</FONT></FONT></P></TD><br />
<TD WIDTH=53><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">7<br />
% 2</FONT></FONT></P></TD><br />
<TD WIDTH=331>Devolve o resto de dividir ambos os n&uacute;meros, neste exemplo o resultado &eacute; 1</TD><br />
</TR><br />
<TR><br />
<TD WIDTH=61><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">++</FONT></FONT></P></TD><br />
<TD WIDTH=80><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Suma<br />
1</FONT></FONT></P></TD><br />
<TD WIDTH=53><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">$a++</FONT></FONT></P></TD><br />
<TD WIDTH=331><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Suma<br />
1 ao contido dunha variable.</FONT></FONT></P></TD><br />
</TR><br />
<TR><br />
<TD WIDTH=61><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">--</FONT></FONT></P></TD><br />
<TD WIDTH=80><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Resta<br />
1</FONT></FONT></P></TD><br />
<TD WIDTH=53><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">$a--</FONT></FONT></P></TD><br />
<TD WIDTH=331><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Resta<br />
1 ao contido dunha variable.</FONT></FONT></P></TD><br />
</TR><br />
</TABLE><br />
<br />
<source lang="php"><br />
<html> <br />
<head> <br />
<title>Exemplo de PHP</title> <br />
</head> <br />
<body> <br />
<?php <br />
$a = 8; <br />
$b = 3; <br />
echo $a + $b,"<br>"; <br />
echo $a - $b,"<br>"; <br />
echo $a * $b,"<br>"; <br />
echo $a / $b,"<br>"; <br />
$a++; <br />
echo $a,"<br>"; <br />
$b--; <br />
echo $b,"<br>"; <br />
?> <br />
</body> <br />
</html><br />
</source><br />
<br />
--[[Usuario:Veiga|Rafael Veiga]] 11:13 10 feb 2009 (GMT)</div>
Veiga