How to convert numbers into strings in php?

青灯夜游
Release: 2023-03-07 11:38:02
Original
3885 people have browsed it

How to convert numbers into strings in php: 1. Use forced type conversion, syntax "(string)number"; 2. Use strval() function, syntax "strval(number)"; 3. Use the settype() function, the syntax is "settype(number, "string")".

How to convert numbers into strings in php?

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php Convert numbers into strings Method

1. Forced type conversion

Type coercion in PHP is very similar to that in C: add before the variable to be converted The target type enclosed in parentheses.

The allowed casts are:

  • (int),(integer) - Convert to integer type

  • (bool ),(boolean) - Convert to Boolean type

  • (float),(double),(real) - Convert to floating point type

  • (string)                                                                                                                                                                                                                                         through

  • Note that spaces and tabs are allowed within brackets

  • Example:

    <?php   
    $num1=314;   
    $num2=(string)$num1;   
    var_dump($num1); 
    var_dump($num2); 
    ?>
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    Output:
int 314
string &#39;314&#39; (length=3)
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2. Use the strval() function

The strval() function is used to obtain the string value of the variable.

Example:

<?php   
$num=31415;   
$str=strval($num); 
var_dump($num);  
var_dump($str); 
?>
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Output;

int 31415
string &#39;31415&#39; (length=5)
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3. Use the settype() function


settype () function is used to set the type of variables.

settype ( var , type )
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Return value: TRUE when the setting is successful, FALSE when the setting fails. Example:

<?php   
$num=12.8;   
$str=settype($num,"string");   
var_dump($str);  
var_dump($num); 
?>
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Output:

boolean true
string &#39;12.8&#39; (length=4)
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How to convert numbers into strings in php?

Supplement:

Judgment string is all composed of numbers

<?php
$str = "123"
if(ereg(&#39;^[0-9]+$&#39;, $str)) {
    // true
}
?>
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For more programming-related knowledge, please visit:

Introduction to Programming

! !

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