PHP error control operator usage example summary

Today I will explain to you the "error control operator" in PHP operators. First, let’s understand what the error control operator does? As the name suggests, the error control operator is used to control error output. This control only blocks the error information and prevents it from being displayed. It does not really solve the error. The method is very simple, just add "@" before the wrong expression. When unnecessary error messages often appear when using certain functions in a program, you can use this operator to shield them, provided that the error message does not affect the running of the program. If there are some errors that affect program operation, we do not recommend using error control characters, as this is not conducive to eliminating program errors. There is something to note here. Our "@" error control symbol cannot be placed before the definition of a function or class, nor can it be used in conditional structures, etc. The "@" control character is only valid for expressions. To put it simply: if we get a value from a place, we can put @ in front of it. For example, put @ in front of variables, constants, and function calls. Let's take a look at the usage examples of error control operators. When we open a file that does not exist, use "@" to shield

1. PHP Operator (7) "Error Control Operator" example explanation

## Introduction: The error control operator, as the name suggests, is used to control error output. This The control only blocks the error message and prevents it from being displayed. It does not really solve the error. The method is very simple, just add "@" before the wrong expression.

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Introduction: An operator is a symbol used to calculate variables, constants or data. It is a specified operation performed on a value or a group of values. PHP operators: arithmetic operators, string operators, assignment operators, bitwise operators, logical operators, comparison operators, increment or decrement operators, error control operators. We will explain them to you separately later. Let's first explain the arithmetic operators in PHP operators.

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##Introduction: PHP supports a Error control operator: @. When placed before a PHP expression, any error message that expression may produce is ignored. If you use set_error_handler() to set a custom

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Introduction:: This article mainly introduces PHP basic operators, array operators, error control operators and basic knowledge. Students who are interested in PHP tutorials can refer to it.

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Introduction: Php operators, process control, functions ​ ? 1. Php operator 1.1. ???? Arithmetic operator: +, -, *, /, %, ++, -- 1.2. ???? Assignment operator: =, +=, -=, *=, .= 1.3. ???? comparison operator: ==, !=, <>, <, >, <=, >=, ? : 1.4. ???? Error control operator: Php supports an error control

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Does PHP provide an error control operator "@"? What on earth is this "@"?

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