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1<HTML
2><HEAD
3><TITLE
4>mt_srand</TITLE
5><META
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9TITLE="Manuál PHP"
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37><TR
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39COLSPAN="3"
40ALIGN="center"
41>Manuál PHP</TH
42></TR
43><TR
44><TD
45WIDTH="10%"
46ALIGN="left"
47VALIGN="bottom"
48><A
49HREF="function.mt-rand.html"
50ACCESSKEY="P"
51>Pøedcházející</A
52></TD
53><TD
54WIDTH="80%"
55ALIGN="center"
56VALIGN="bottom"
57></TD
58><TD
59WIDTH="10%"
60ALIGN="right"
61VALIGN="bottom"
62><A
63HREF="function.octdec.html"
64ACCESSKEY="N"
65>Dal¹í</A
66></TD
67></TR
68></TABLE
69><HR
70ALIGN="LEFT"
71WIDTH="100%"></DIV
72><H1
73><A
74NAME="function.mt-srand"
75></A
76>mt_srand</H1
77><DIV
78CLASS="refnamediv"
79><A
80NAME="AEN41068"
81></A
82><P
83> (PHP 3&#62;= 3.0.6, PHP 4 )</P
84>mt_srand&nbsp;--&nbsp;Seed the better random number generator</DIV
85><DIV
86CLASS="refsect1"
87><A
88NAME="AEN41071"
89></A
90><H2
91>Description</H2
92>void <B
93CLASS="methodname"
94>mt_srand</B
95> ( int seed)<BR
96></BR
97><P
98>&#13; Seeds the random number generator with
99 <TT
100CLASS="parameter"
101><I
102>seed</I
103></TT
104>.
105 <DIV
106CLASS="informalexample"
107><A
108NAME="AEN41081"
109></A
110><P
111></P
112><TABLE
113BORDER="0"
114BGCOLOR="#E0E0E0"
115CELLPADDING="5"
116><TR
117><TD
118><PRE
119CLASS="php"
120>// seed with microseconds
121function make_seed() {
122 list($usec, $sec) = explode(' ', microtime());
123 return (float) $sec + ((float) $usec * 100000);
124}
125mt_srand(make_seed());
126$randval = mt_rand();</PRE
127></TD
128></TR
129></TABLE
130><P
131></P
132></DIV
133>
134 </P
135><DIV
136CLASS="note"
137><BLOCKQUOTE
138CLASS="note"
139><P
140><B
141>Poznámka: </B
142>
143 Since PHP 4.2.0 it's no longer necessary to seed the random number
144 generator before using it.
145 </P
146></BLOCKQUOTE
147></DIV
148><P
149>&#13; See also <A
150HREF="function.mt-rand.html"
151><B
152CLASS="function"
153>mt_rand()</B
154></A
155>,
156 <A
157HREF="function.mt-getrandmax.html"
158><B
159CLASS="function"
160>mt_getrandmax()</B
161></A
162> and <A
163HREF="function.srand.html"
164><B
165CLASS="function"
166>srand()</B
167></A
168>.
169 </P
170></DIV
171><DIV
172CLASS="NAVFOOTER"
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174ALIGN="LEFT"
175WIDTH="100%"><TABLE
176SUMMARY="Footer navigation table"
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181><TR
182><TD
183WIDTH="33%"
184ALIGN="left"
185VALIGN="top"
186><A
187HREF="function.mt-rand.html"
188ACCESSKEY="P"
189>Pøedcházející</A
190></TD
191><TD
192WIDTH="34%"
193ALIGN="center"
194VALIGN="top"
195><A
196HREF="index.html"
197ACCESSKEY="H"
198>Domù</A
199></TD
200><TD
201WIDTH="33%"
202ALIGN="right"
203VALIGN="top"
204><A
205HREF="function.octdec.html"
206ACCESSKEY="N"
207>Dal¹í</A
208></TD
209></TR
210><TR
211><TD
212WIDTH="33%"
213ALIGN="left"
214VALIGN="top"
215>mt_rand</TD
216><TD
217WIDTH="34%"
218ALIGN="center"
219VALIGN="top"
220><A
221HREF="ref.math.html"
222ACCESSKEY="U"
223>Nahoru</A
224></TD
225><TD
226WIDTH="33%"
227ALIGN="right"
228VALIGN="top"
229>octdec</TD
230></TR
231></TABLE
232></DIV
233></BODY
234></HTML
235>
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