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uphp:functions:intval [2017/03/06 14:14]
jeff 		uphp:functions:intval [2021/09/13 05:57] (current)
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 ======intval====== ======intval======
 +
 <badge>WMPRO, WMMINI FW >= 1.0</badge> <badge>WMMEGA FW >= 2.0</badge> <badge>WMPRO, WMMINI FW >= 1.0</badge> <badge>WMMEGA FW >= 2.0</badge>
  
-Return the integer value of a number or string+<html>Return the <b><span style="color:green">integer<span style="color:black"></b> value of a <b><span style="color:green">number<span style="color:black"></b> or <b><span style="color:green">string<span style="color:black"></b></html>
  
 ====Description==== ====Description====
-<well size="sm"><html><span style="font-size:125%;color:green;">int + 
-<span style="color:black;"></html>[[intval]] ( +<well size="sm"><html> 
-<html><span style="color:green;">mixed +<span style="font-size:125%;color:green">int 
-<span style="color:blue;">$value +<span style="color:black">intval ( 
-<span style="color:black;">)+<span style="color:green">mixed 
 +<span style="color:blue">$value 
 +<span style="color:black">)
 </html></well> </html></well>
  
-Return the integer equivalent by truncating the fractional component of the number+Return the <html><b><span style="color:green">integer<span style="color:black"></b></html> value by rounding
  
-====Parameters==== +====Parameter====
-<html><span style="color:blue;"><b>value</b><span style="color:black;"></html>:  A string with a leading number, or a number (int or float)+
  
-====Return Value==== +<html><b><span style="color:blue">$value<span style="color:black"></b>:  A <b><span style="color:green">string<span style="color:black"></b> with a leading number, or a <b><span style="color:green">number<span style="color:black"></b> (<b><span style="color:green">int<span style="color:black"></b> or <b><span style="color:green">float<span style="color:black"></b>)</html> 
-Integer value, or:+ 
 +====Return Values==== 
 + 
 +<html><b><span style="color:green">Integer<span style="color:black"></b></html> value, or:
   * 0 on failure (for example, strings without a numeric in the leftmost characters)   * 0 on failure (for example, strings without a numeric in the leftmost characters)
-  * 0 on empty arrays +  * 0 on empty <html><b><span style="color:green">array<span style="color:black"></b></html> 
-  * 1 on non-empty arrays +  * 1 on non-empty <html><b><span style="color:green">array<span style="color:black"></b></html> 
-The maximum value possible is a signed integer in the range -2147483648 to 2147483647.+The maximum value possible is a signed <html><b><span style="color:green">integer<span style="color:black"></b></html> in the range -2147483648 to 2147483647.
  
 ====Example==== ====Example====
-Convert the float '1.55' into an integer variable which has a value of 1:+ 
 +===Convert the float '1.55' into an integer which has a value of '2'=== 
 <code php> <code php>
 <? <?
-$f=1.55; +  $f=1.55; 
-$i=intval($f); +  $i=intval($f); 
-print("The integer value of ".$f." is ".$i);+  print("The integer value of ".$f." is ".$i);
 ?> ?>
 </code> </code>
 +
 The above example will output: The above example will output:
 <code> <code>
-The integer value of 1.550000 is 1+The integer value of 1.550000 is 2
 </code> </code>
  
 ====See Also==== ====See Also====
-[[floatval()]] - Return the floating point value of a number or string 
  
-[[is_numeric()]] - Return 1 if the value is numeric (string, integer or float)+[[floatval()]] - <html>Return the <b><span style="color:green">float<span style="color:black"></b> value of a <b><span style="color:green">number<span style="color:black"></b> or <b><span style="color:green">string<span style="color:black"></b></html> 
 + 
 +[[strval()]] - <html>Return the <b><span style="color:green">string<span style="color:black"></b> equivalent of a <b><span style="color:green">number<span style="color:black"></b></html> 
 + 
 +[[is_numeric()]] - <html>Check if a value is numeric (<b><span style="color:green">int<span style="color:black"></b>, <b><span style="color:green">float<span style="color:black"></b> or numeric <b><span style="color:green">string<span style="color:black"></b>)</html> 
 + 
 +[[ieee754toint()]] - <html>Convert a <b><span style="color:green">float<span style="color:black"></b> value to an IEEE-754 encoded <b><span style="color:green">integer<span style="color:black"></b> (32 bit)</html> 
 + 
 +[[uphp:variables|uPHP Variable Types and Limits]] 
 + 
 +====Note==== 
 + 
 +In firmware versions released before 8/14/17 this function returned the integer value by truncating the fractional component of the number (it did not round up or down):
  
-[[ieee754toint()]] - Take a floating point value and return an IEEE-754 encoded integer (32 bit)+<badge>WMPRO, WMMINI FW < 1.1068</badge> <badge>WMMEGA FW < 2.1068</badge>
  
-[[inttoieee754()]] - Take an IEEE-754 encoded integer (32 bit) and return a float 
uphp/functions/intval.1488809692.txt.gz · Last modified: 2021/09/13 05:56 (external edit)

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