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Variable function library: Print_r

Source: Internet
Author: User
Keywords PHP Chinese function Manual Printer variable function library
Tags aliyun array expression function function library html http information
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Print_r

(PHP4)

Print_r---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; List variable Information

Syntax: void Print_r (mixed expression);

Description:

This function lists the variable information that people can read (human-readable) and lists its own value if the given value is a string, an integer, or a floating-point number. If an array is given, the value is displayed in the index value and in the format of the element.

Example:

<?php

$a = Array (1, 2, Array ("A", "B", "C"));

Print_r ($a);

?>

Warning: This function continues if the given array or object contains its own direct or indirect relationship, or if it contains an array or object that is deep in depth.

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Related Keywords:
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