A summary of the math tips for getting started with PHP tutorials

This article is an example of the mathematical techniques for getting started with PHP tutorials. Share to everyone for your reference, as follows:

demo1.php

<?php//$a = ' 5 ';//$b = 7+ $a;//echo $b;  $a = ' a ';  $b = 7+ $a;  echo $b;? >

demo2.php

<?php  $a = 10.0;  Is_int--detects if the variable is an integer  if (is_int ($a)) {    echo ' passes ';  } else{    Echo ' does not pass ';  }? >

demo3.php

<?php  $a = 10.0;  Is_int--detects if the variable is an integer  if (is_int ($a)) {    echo ' passes ';  } else{    Echo ' does not pass ';  }? >

demo4.php

<?php  //rand-produces a random integer  //echo rand (0,10);  echo Mt_rand (0,100);  Echo Getrandmax ();//maximum number 32767  //echo mt_getrandmax ();//Maximum number 2147483647?>

demo5.php

<?php//$i = 123456789.4454;//$b = Number_format ($i, 2);//echo $b;  123,456,789.45  $i = 12378456.456789;  $b = Number_format ($i, 2, ' # ', ' @ ');  Echo $b;//12@378@456#46?>

demo6.php

<?php//$a = -6;//echo abs ($a)//absolute value//$b = 5.66;//echo Floor ($b),//de-rounding//echo round ($b);//Rounding  Echo min (1,23,4 56,87,45,7,54);//1 the minimum value or the minimum value in the array,  echo Max (1,23,456,87,45,7,54),//456 the maximum value or the maximum value in the array  echo pi ();//3.14159265359  Echo Pow (2,6);//64?>

I hope this article is helpful to you in PHP programming.